Which ions remain in solution, unreacted, after each of the following pairs of solutions is mixed? lead nitrate and lithium sulfide

Answers

Answer 1

The inorganic salt of nitric acid and lead is the chemical compound lead(II) nitrate.

What is Lead nitrate?

It is a strong, stable oxidant that appears as white powder or colorless crystal. It dissolves in water, unlike the majority of other lead(II) salts.

Since the Middle Ages, when it was known as plumb dulcis, its primary use has been as a raw ingredient for the creation of several pigments. It has been utilized industrially as a heat stabilizer in nylon and polyester since the 20th century, as well as in coatings for photothermographic paper.

In the United States, commercial manufacturing did not begin until after 1943, and in Europe, it did not begin until the 19th century. The typical production procedure involved metallic lead or lead oxide in nitric acid.

Therefore, The inorganic salt of nitric acid and lead is the chemical compound lead(II) nitrate.

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Related Questions

a rectangular garden measures 34ft by 45ft. surrounding (and bordering) the garden is a path 4ft wide. find the area of this path. be sure to include the correct unit in your answer.

Answers

Area is defined as the total space taken up by a flat (2-D) surface or shape of an object.

What is this rectangular?A quadrilateral with four equal vertices and parallel sides is known as a rectangle. As a result, it is also known as an equiangular quadrilateral. Rectangles can also be referred to as parallelograms because their opposing sides are equal and parallel. A laptop has four sides, two of which are parallel to one another and are of equal length. This means that a laptop is a well-known example of a rectangle-shaped object in everyday life. The shape of a keyboard and a monitor's screen is also rectangular. A quadrilateral with all of its angles being equal, or right angles, is a rectangle.

Area = length x breadthArea = l × b. Area = π × radius × radiusArea = π × r2(π = 3.14) Using these formulas, area for different quadrilaterals

A = L x W    where A equals area, L equals length, and W equals width.

area of yard = 34 x 45 = 1530 square feet

walk is 4 feet wide

34-4 =30, 45-4 = 41

30*41=1230

1530-1230=300

area of walk is 300 square feet

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The primary ingredient of most shampoos is:

Answers

Answer: Water

Explanation: Water is the main ingredient in most shampoos. The second ingredient that most shampoos have in common is the primary surfactant (or base detergent). Surfactants are cleansing or surface active agents.

Tablets taken by patients suffering from anaemia contain 0. 2 g of iron sulphate (feso4). Calculate the mass of iron in each tablet to 2 decimal places.

Answers

Each iron tablet contains 152 g of iron.

The substance listed here is iron sulfate, and its chemical formula is FeSO4.

The compound's relative formula mass is calculated by multiplying the atomic masses of its constituent parts, and it is then given in grams.

The atomic mass of Fe = 55.845

The atomic mass of  S = 32.065

The atomic mass of   O = 15.994

So;

Relative formula mass is calculated as 55.845 + 32.065 + 4(15.994)  = 151.886g

Therefore, the solution is 152g

A particle's or object's mass, a dimensionless quantity, is used to represent how much matter is there (symbolized m).  The kilogram is the chosen unit of mass according to the International System (SI) (kg).

In physics, mass is a way to quantify inertia, a fundamental property of all matter.

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The ideal gas law displays the relationship in which of the following? Select all that apply. Select all that apply: A.Amontons's law B.Charles's law C.Boyle's law D.Avogadro's law

Answers

Amontons's law, Charles's law, Boyle's law and Avogadro's law are applied in ideal gas equation.

According to Boyle's Law, gas volume grows as pressure lowers. According to Charles' Law, a gas expands in volume as its temperature rises. Additionally, Avogadro's Law states that as gas concentration rises, so does its volume. The macroscopic characteristics of ideal gases are related by the ideal gas law (PV = nRT). A gas is considered to be ideal if its particles neither attract nor repel one another and occupy any space (have no volume).

Hence, ideal gas equation summation of individual gas laws.

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what is an acidic oxide

Answers

Explanation: An acidic oxide is an oxide that either produces an acidic solution upon addition to water, or acts as an acceptor of hydroxide ions effectively functioning as a Lewis acid. Examples include SO2, CO2, SO3, Cl2O7, P2O5, and N2O5.

Answer:

An acidic oxide is an oxide that either produces an acidic solution upon addition to water, or acts as an acceptor of hydroxide ions effectively functioning as a Lewis acid.[1] Acidic oxides will typically have a low pKa and may be inorganic or organic.

Describe each of the following 5 properties of metals. Write at least 2 sentences about each. Please use proper grammar, spelling, and mechanics.
Electric conductivity
Heat conductivity
Ductility and malleability
Luster
High melting and boiling points
Metal conducts electricity when the delocalized electrons allow electrons to move from one side of the metal to another transferring the electric charge. Items like wood and rubber do not have delocalized electrons so electrical charges can not flow through them.
Metal conducts heat because when the delocalized electrons are heated they move faster. When the delocalized electrons move faster they move towards the colder end of the metal and transfer the heat throughout the metal object.
Metal can be ductile and malleable because of the sea of electrons. Because the electrons move freely, they move as the positive metal ions move, which keeps the metal stable.
Metal has luster because the sea of electrons absorbs and reflects light at the same frequency. This makes the metal look shiny.
Metals have high melting and boiling points because of the sea of electrons. The connection created by the positive and negative charges causes the metals to hold in place, giving metals a high melting and boiling points.

Answers

Five properties of metals are:

*Electric conductivity

*Heat conductivity

*Ductility and malleability

*Luster

*High melting and boiling points

Metal conducts electricity when the delocalized electrons allow electrons to move from one side of the metal to another transferring the electric charge. Items such as wood and rubber do not have delocalized electrons so electrical charges and that's why charge doesn't flow through them.

Metal conducts heat because when the delocalized electrons are heated they move faster. When the delocalized electrons move faster they move forward towards the colder end of the metal and transfer heat throughout the metal object.

Metal is ductile and malleable because of the ocean of electrons. Electrons move freely, they move as the positive metal ions move, which keeps metal stable.

Metal has luster because the ocean of electrons absorbs as well as reflects light at the same frequency. This makes the metal look shiny.

Metals acquire high melting and boiling points because of the ocean of electrons. The relation created by the positive and negative charges tends to the metals to hold in place, which gives metals high melting and boiling points.

Metals are opaque, lustrous elements that are accurate conductors of warmth and energy. maximum metals are malleable and ductile.

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if an element has an atomic number of 15 then what is it?

Answers

Phosphorus is a chemical element with symbol P and atomic number 15.

Please helpp!!!!
1. Covering with greases on the iron makes _____________ .
1. stopping air and water from being in contact with the iron.
2. reacting with oxygen and/or water instead of iron
3. slipping the foreign materials

2. ​​Which substance can react with copper to make copper carbonate?​​

3. ​​​What is the product of the combustion reaction of lithium.​

4. ​​​In presenting the evidence in the table, the variable you change is written in the ___________.

1. left column
2. middle column
3. left row
4. right column​

​5.​​The iron corrosion, rusting, can be prevented by coating with __________, __________ and __________ .

6.​​​In the chemical reaction, the substances you end up with are different from the ones you started with is called __________.


1. are not reversible
2. create new substances
3. compound
4. mixture​​

7. ​​A ______________ is a chemical reaction that happens on the surface of a metal.
1. combustion reaction
2. corrosion reaction
3. metal reaction
4. acid reaction​

8.In a chemical equation, the reactants and products are ____________ from each other.
1.different
2. the same
3. separated
4. obtained

​9. ​​As silver reacts with polluted air, a black compound, _____________ is formed.
1.silver carbonate
2. silver sulfide
3. silver oxide
4. silver alloy​​

Answers

1) Covering with greases on the iron  stops air and water from being in contact with the iron.

2) The substance that can react with copper to make  copper carbonate is silver carbonate

3) The combustion of lithium produces lithium oxide

4) The table is not shown hence the question can not be answered

5) another metal, oil and grease

6) The chemical reaction creates new substances.

7)  ​​A corrosion reaction is a chemical reaction that happens on the surface of a metal.

8) .In a chemical equation, the reactants and products are different from each other.

9)  ​​As silver reacts with polluted air, a black compound,  silver oxide is formed.

What is oxidation?

In the process of oxidation, we are just burning up a substance in oxygen. When we burn the substance in oxygen, there is an increase in the oxidation number of the object and oxygen is also added to the object. This is what we call oxidation of a substances.

Now we know that oxygen is abundant in the universe and thus it can be used in the burning of a substances. In effect we can look at the process of combustion as a situation in which we burn an object in air.

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for the endothermic reaction below, which way would the equilibrium shift, for each situation below? answer with: shifts to right (products), shifts to left (reactants), or no shift

Answers

Endothermic reaction shifts to the right to make products and performs an equilibrium shift.

An endothermic reaction is any thermodynamic method with a boom in the enthalpy H of the gadget. In this kind of process, a closed gadget generally absorbs thermal power from its environment, that's warmth transfer into the device.

Endothermic reactions are chemical reactions wherein the reactants soak up warm energy from the environment to form merchandise. Those reactions lower the temperature of their surrounding place, thereby developing a cooling effect.

The reactions in which heat is absorbed are known as endothermic reactions. If the actual quantity of warmth absorbed is understood then this quantity is written in any other case genuinely the phrase warmness is written. Eg: N2(g) + O2(g) + warmth → 2NO(g)

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Cl is part of the element family Halogens, which are also known as salt formers. How
many valence electrons does Na have when forming an ionic bond with CI? As you
remember, valence electrons are the ones in the outermost shell.
a) 8
b) 1
c) 2
d) 4

Answers

Na has 8 valence electrons when forming an ionic bond with Cl, option A.

What is the valency of sodium chloride?

Chlorine (Cl) has seven valence electrons and Sodium (Na) has one. To form an octet, sodium must give up one electron and chlorine must gain one. Therefore, both sodium and chlorine ions have eight valence electrons and their outermost energy levels become completely depleted.

Bonds hold the negative and positive ions together. As a result, sodium chloride is formed (table salt). Also, to find valence electrons, a periodic table column can be used to determine an element's main group number.

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gold has a face-centered cubic unit cell. how many atoms of au are present in each unit cell? express your answer as an integer.

Answers

There are 3 Au atoms are present in each unit cell.

The crystal structure of gold is face-centered cubic. Its unit cell or basic repeating unit, contains four gold atoms, indicating that the gold atoms are in contact along the diagonal. The crystal structure of gold is a close-packed face-centered cube Imagine a cube with a gold atom at each corner and at the center of each face.

Gold is a chemical element with 79 protons in each nucleus. All atoms with 79 protons are gold atoms, and all gold atoms behave similarly chemically. So, in principle, you only need 79 protons to make gold. A face-centered cubic unit cell also starts with identical particles at the eight corners of the cube.

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Give formulas corresponding to the following names: (a) Potassium tris(oxalato)chromate(lli) (b) Tris(ethylenediamine) cobalt(III) pentacyanoiodomanganate(Il) (c) Diamminediaquabromochloroaluminum nitrate

Answers

To solve the given problems, there are some rules for naming these compounds in coordination chemistry.

What is the nomenclature for naming coordination compounds?Cation is always named before anion.The amount of ligands of a certain type is a numerical prefix.We name the ligands in the complex ion before the metal ion, in alphabetically sequence.the oxidation state of metal ion is denoted by roman numerals in parenthesis For the anion complex, the metal name's ending is replaced with -ate.Molecular names are most frequently seen in neutral ligands, whereas anionic ligands remove the -ide & add -o to the root name.

Some other rules for writing formula-

Cation and anion charges are balanced by one another.Outside of the brackets, we write the counterions.

Now, as per the given questions we can write the formulas-

a) [tex]K_{3}[Cr(C_{2}O_{4})_{3}][/tex]

b) [tex][Co(en)_{3}]_{4} [Mn(CN)_{5}I]_{3}[/tex]

c) [tex][Al(H_{2}O) _{2}(NH_{3}) _{2}BrCl]NO_{3}[/tex]

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Draw the Lewis structure of HCN.HCN. Include lone pairs.
Draw the Lewis structure of CO2−3.CO32−. Include lone pairs. Formal charges are optional.

Answers

The Lewis structures of HCN and the carbonate ion are shown in the images attached.

What is the Lewis structure?

We know that the term Lewis structure has to do with the representation of the compound in which we have the symbol that depicts each and every one of the elements in the compound and then we have the electrons that are found in the central atom shown as dots.

In this case, we have been asked to show the Lewis structures of the hydrogen cyanide and the carbonate ion and these can be seen in the images that have been attached to this answer here.

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when considering solutions of liquids in liquids, polar liquids are generally miscible with .

Answers

When considering solutions of liquids in liquids, polar liquids are generally miscible with water.

solution, in chemistry ,means  a homogenous mixture of two or more substances in relative amounts that can be varied continuously up to what is called the limit of the solubility. The term solution is commonly applied to the liquid state of matter, but solutions of gases and solids are possible.

If the molecular compound is a liquid two things can happen when it comes into contact with water: it can either mix with the water or it can separate from the water. When two liquids mix they are said to be "miscible". When two liquids not not mix or if they separate they are said to be "immiscible". The answer is similar to the one for solids above: If the liquid molecules are polar like methanol rubbing alcohol, then it will be miscible with water. If the liquid molecules are nonpolar like oil, then the liquid will be immiscible with water.

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which of the following is the cleanest burning fossil fuel? question 2 options: coal natural gas oil none of the above, all are equally dirty

Answers

Answer:

creo que es el gas natural

1. SiH4 what is the covalent compounds

Answers

Answer: Silicon tetrahydride (silane) is a covalent compound where a central silicon (Si) atom is covalently bonded to 4 terminal hydrogen (H) atoms.

Explanation:

Using the law of mass action, write the equilibrium expression for each of the followi ng reactions .(a) 8H2(g) + S8(s)↔8H2S(g), (b) C(s) + H2O(l) + Cl2(g) ↔COCl2(g) + H2(g), (c) CaCO3(s) ↔CaO(s) + CO2(g), (d) 3 C2H2(g) ↔ C6H6(l)

Answers

The equilibrium expression for the reactions for the law of mass action. is as follows

8H₂(g) + S₈(s)↔8H₂S(g)

K=  [H₂S]⁸/ [S]⁸ × [ H₂]⁸

C(s) + H₂O(l) + Cl₂(g) ↔COCl₂(g) + H₂(g)

K= [ COCl₂] [H₂]/ [C] [H₂O]

CaCO₃(s) ↔CaO(s) + CO₂(g)

K= [ CaO] [ CO₂] / CaCO₃

3 C₂H₂(g) ↔ C₆H₆(l)

According to the law of mass action, a chemical reaction's rate is directly proportional to the sum of its component reactant concentrations or activities. It explains and forecasts how solutions in dynamic equilibrium will behave.

It implies that the ratio of reactant to product concentration is constant for a chemical reaction mixture that is in equilibrium.

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A rectangular swimming pool is 8 ft deep. One side of the pool is 4,5 times longer than the other. The amount of water needed to fill the swimming pool is 5184 cubic feet. Find the dimensions of the pool

The smaller dimension of the pool is ft and the larger dimension is tt

Answers

The dimension of the pool is Width = 13.5 ft  , depth = 8 ft , length = 60.75 ft .

The volume expression is given as :

V = L × W × D

where ,

L = length = 4.5 times Width

W = width = ?

D = depth = 8 ft

V = volume = 5184

5184 = 6 × W × 4.5W

5184 = 27 W²

W² = 5184 / 27

W² = 192

W = 13.8 ft

therefore, A rectangular swimming pool is 8 ft deep. One side of the pool is 4,5 times longer than the other. The amount of water needed to fill the swimming pool is 5184 cubic feet the dimensions are Width = 13.5 ft , depth = 8 ft, length = 60.75 ft.

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A trend relating the melting point of a transition metal in Periods 4 and 5 to the number of electrons each atom has? Explain

Answers

The melting point of transition elements increases up to d 5 and then drops over time as the atomic number rises.

What is transition element ?

Transitional elements are those that have their d orbitals only partially filled. According to IUPAC, a transition element is an element with a partially full d subshell of electrons or an element with a partially filled d orbital that can form stable cations.

As was previously discovered, the higher the metal's melting temperature, the more delocalized electrons there are and the smaller the atom's radius. The number of delocalized electrons per metal atom rises as we cross period 3, and the radius of the elements decreases. This implies that the melting point rises.

Thus,The melting point of transition elements increases up to d 5 and then drops over time as the atomic number rises.

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Design a concept map that compares and contrasts the atomic ideas proposed by Democritus and John Dalton.

Answers

The atomic theories of Dalton and Democritus does converge in a common idea of the indivisibility of the atom.

What is the atomic theory?

We know that the atomic theory is the description of the atom from diverse perspectives. Actually, we begin the idea of the atomic theory from the would of Democritus. In the time of Democritus, there were no empirica laboratories hence, he had to make do with the theoretical approaches to the idea of the atom. He put forward the idea of the indivisibility of the atom.

This idea of the indivisibility of the atom became a resonating theme in the study of the atom from the time of Democritus down to the time of John Dalton. According to the Dalton Atomic theory, the atom is indivisible and the atoms of an element can be able to combine with the atoms of other elements in small simple ratios.

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[tex]\mathrm{Cr}[/tex] is a member of which family?
noble gases
halogens
alkaline earth metals
alkali metals
transition metals

Answers

Answer:

transition metals

Explanation:

It is shown in the periodic table. It has an atomic number of 24 and exhibits characters which makes it to be a transition element.

transition metal family

A certain brand of canned soup contains 2.26g NaCl in a single-cup serving. what is the molarity of NaCl in the soup? (Note: 4 c = 0.946 L.)

Answers

The molarity of the solution is  0.0597 M.

What is the molarity?

We know that the molarity has to do with the number of moles of the substances that is found in a  given volume of solution. Thus the term molarity has to do with the amount of substance that is present.

We have that;

Mass of the sodium chloride = 2.26g

Molar mass of the sodium chloride = 40 g/mol

Volume of the solution = 0.946 L

Number of moles = 2.26g/ 40 g/mol

= 0.0565 moles

Molarity = 0.0565 moles/0.946 L

= 0.0597 M

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Which pair of elements will form a covalent bond?hydrogen and chlorinesodium and chlorinecopper and brominezinc and bromine.

Answers

Chlorine and hydrogen will form covalent bond.

What is covalent bond?

An electron exchange that results in the formation of electron pairs between atoms is known as a covalent bond. Bonding pairs or shared pairs are the names given to these electron pairs. Covalent bonding is the stable equilibrium of the attractive forces between atoms when they share electrons. Each atom in many molecules can reach the equivalent of a complete valence shell thanks to the sharing of electrons, which results in a stable electronic configuration. Covalent bonds are much more frequent than ionic bonds in organic chemistry. Numerous other types of interactions fall under the category of covalent bonding, such as bent bonds, three-center two-electron bonds, agostic interactions, metal-to-metal bonds, and three-center four-electron bonds.

Chlorine and hydrogen Non-metals can connect covalently with one another.

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sif5 lewis structure

Answers

The central silicon atom expands the octet because it is bonded with 9 electrons, and the Lewis structure of SiF₅ reveals that there are 5 single bonds and no double bonds in the compound.

Silicon Penta Fluoride: What is it?

Fluoride in silicon pentoxide SiF₅ is a covalent compound created when silicon and fluorine share electrons. The 14th element, silicon, has four valence electrons. So, in order to reach octet, it needs 4 more electrons.

The 17th element, fluorine, has seven valence electrons. So, to reach an octet, one electron is required. Each F shares one of its valence electrons with silicon, giving silicon more electrons than an octet by receiving nine. Each of the five bonds is a single bond.

The charge on the main atom is created by the one extra pair of electrons. The compound thus does not follow the octet rule.

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Which sample has the largest mass?
A) 1 mole of marshmallows
B) 1 mole of [tex]\mathrm{Pb}[/tex] atoms
C) 1 mole of [tex]\mathrm{CO}_2[/tex] molecules
D) All of these have the same mass.

Answers

The substances that would have the largest mass from the list is marshmallows.

Which compound has the largest mass?

We know that the mass of a compound can be obtained is the product of the molar mass and the number of moles of the object. We would now consider the molar mass of each of the substances that we can find on the list.

We can now see that the substances that has the greatest molar mass in the list is the object marshmallows which is largely composed of sugars and are used in confectionery and this would have the largest mass.

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Which of the following is
the BEST reason to reduce
pollution rather than trying
to clean polluted waters?
A. cleaning polluted waters is difficult
and expensive
B. reducing pollution is easy
C. reducing pollution is cheap
D. cleaning polluted waters is very
cheap

Answers

Cleaning polluted waters is difficult and expensive.

What is water pollution?

Water contamination occurs when pollutants contaminate water source and render the water unfit for use in drinking, cooking, cleaning, swimming, and other activities. Germs, dust,and parasites are examples of pollutants.

Why is cleaning polluted water difficult?

Reversing the impacts of water contamination is exceedingly challenging. Even with costly technology, it can take years to completely purify the water because natural processes can take years, decades, or even centuries. Even though water is polluted, there are some ways to reduce pollution. They are

Dispose of dangerous household goods properlyReduce or stop using chemical pesticides, herbicides, and fertilizersSet up a time to get your septic system serviced.Use native plants in your landscaping.Fix any barren areas in your yard.Creating a rain garden

Hence, option A is correct.

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Which of the following is an alpha-keto acid/alpha-amino acid pair used in transamination? A) Pyruvate/leucineB) Oxaloacetate/aspartateC) Oxaloacetate/glutamateD) a-ketoglutarate/aspartateE) a-keto-b-hydroxybutyrate/phenylalanine

Answers

Answer is option B- Oxaloacetate/aspartate is an alpha-keto acid/alpha-amino acid pair used in transamination.

To create the amino acid version of the keto-acid and the keto-acid version of the original amino acid, amino groups are removed from amino acids and transferred to acceptor keto-acids by the process of transamination.

An amino group is transferred from one molecule to another during transamination. The formation of -ketoglutaric acid and aspartic acid from the interaction of glutamic acid and oxaloacetic acid serves as an example of this.

The reversible transfer of an amino group from glutamate to oxaloacetate, which results in the production of aspartate, is physiologically catalyzed by the enzyme AST. The enzyme was therefore previously known as serum glutamic-oxaloacetic transaminase.

Hence, Oxaloacetate/aspartate is an alpha-keto acid/alpha-amino acid pair used in transamination.

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summer is when we are facing the sun and winter is when we are facing away from the sun

Answers

Summer is when we are facing the sun and winter is when we are facing away from the sun which is referred to as a true statement.

What is Summer?

This is referred to as the time of the year when the sun is hot and it is known as the hottest of the four temperate seasons. This usually occurs after spring and before autumn and the temperature is usually high when compared to other seasons.

Winter on the other hand is referred to as the coldest season of the year and it usually occurs between autumn and spring.

Summer therefore occurs when we are facing the sun while winter occurs when we are facing away from the sun which explains the little amount of sunlight experienced in such location and is therefore the reason why true was chosen as the correct choice.

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The full question is :

summer is when we are facing the sun and winter is when we are facing away from the sun true/false

the malate dehydrogenase reaction has a strongly positive standard free energy change but it proceeds in the direction of oxaloacetate because the concentration of is maintained at exceedingly low levels.

Answers

Oxaloacetate concentration is maintained at exceedingly low levels.

What is a malate dehydrogenase?

Malate dehydrogenase (MDH) is a key protein in the main oxidative pathway and is a widely distributed enzyme in living things. Using NAD+ and NADP+ as a cofactor, it catalyses the conversion between malate as well as oxaloacetate. Malate dehydrogenase (MDH), a crucial enzyme inside the tricarboxylic acid cycle (TCA), performs crucial metabolic functions in the pathways that produce aerobic energy as well as in the malate shuttle.

The malate dehydrogenase reaction seems to have a strongly positive gibbs free energy change, but also because the density of oxaloacetate is kept at extremely low levels, it proceeds inside the direction of oxaloacetate.

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What are the products of the acid hydrolysis of an ester?

Answers

The products of the acid hydrolysis of ester are carboxylic acid and alcohol.

Acid hydrolysis of esters

Acid hydrolysis of esters involves heating esters in a large excess of water in the presence of a strong acid catalyst. The products of such reactions are carboxylic acid and alcohol as shown in the below example.

[tex]CH_3COO(CH_2)_3CH_3 + H_2O --- > C_4H_9OH + CH_3CO_2H[/tex]

Acid hydrolysis of esters is the reverse of the esterification process. During ester formation or esterification, carboxylic acids and alcohols react to produce ester and water as follows:

[tex]C_4H_9OH + CH_3CO_2H-- > CH_3COO(CH_2)_3CH_3 + H_2O[/tex]

Thus, acid hydrolysis of esters is a reversible reaction that does not go into completion ordinarily.

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In mature animals, cell division is mainly restricted to repairing tissues by __________ old or damaged cells. A store is having a 12-hour sale. The total number of shoppers who have entered the store thours after it begins is modeled by the function S defined by [tex]S(t)=0.5 t^4-16 t^3+144 t^2[/tex] for [tex]0 \leq t \leq 12[/tex]. At time [tex]t=0[/tex], when the sale begins, there are no shoppers in the store. The rate at which shopper's leave the store, measured in shoppers per hour, is modeled by the function [tex]L[/tex] defined by [tex]L(t)=-80+\frac{4400}{t^2-14 t+55}[/tex] for [tex]0 \leq t \leq 12[/tex]. According to the model, how many shoppers are in the store at the end of the sale (time [tex]t=12[/tex] )? Give your answer to the nearest whole number. Suppose that a customer is purchasing a car. He conducts an experiment in which he puts 10 gallons of gas in the car and drives it until it runs out of gas. He conducts this experiment 15 times on each car and records the number of miles driven.Sample Mean car 1: 250.3 mi/ 10 galSample mean car 2: 246.1 mi/10 galQuestion: Find the medians for Car 2 and Car 2 plot of the Animal Farm What safety precautions do you need to take when using a deep fryer? although the people in the trading center were content to simply enjoy [technology] without explanation, these questions constantly filled my mind. if solving such mysteries was the job of a scientist, then a scientist is exactly what i wanted to become' What was the impact of the Baker v Carr case? What was the main goal of the survey done in may 2020 the best summarizes the resolution of the conflict at the end of the beginnings of the maasai ASAPDetermine the value for x in the equation x over 6 and 4 tenths equals 3 and 6 tenths. 23.04 19.2 10.0 2.8 1. "Here's my phone number." - "Thanks. I'll give you a call if I ...some help tomorrow."A. needB. neededC. will needD. would need2. ...you, I'd think twice about that decision. It could be a bad move.A. If I amB. Were IC. Should I beD. If I had been3. Students working for their 1st degree at a university ... undergraduates.A. callB. calledC. callingD. are called4.... wants to take the GCE 'A' Level has to achieve high grades at the GCSE examination.A. OneB. WhoC. WhoeverD. Those who5. Hurry up! We've got to leave the house immediately. Otherwise, we ...the opening ceremonyA. missB. 'd missC. 'd have missedD. 're going to miss6. If you ...to my advice in the first place, you wouldn't be in this mess right now.A. listenB. listenedC. will listenD. had listened7. A huge tree crashed through the bedroom roof and broke my bed and most of the other furniture ... in the room, I would have been killed.A. Should I beB. Would I beC. Had I beenD. Would I have been8. Unless you ... all of my questions, I can't do anything to help you.A. answerB. are answerC. don't answerD. would answer Evaluate 732,178 + 167 - 542,137 = What are the two options the traveller has ? What is his dilemma? Select all the correct answers.What are two qualities of effective summaries of informational texts? what was the initial source of conflict in sudan What is a benefit of government regulations ? sales tools used to support a company's advertising and personal selling directed to wholesalers, retailers, or distributors are known as blank______-oriented sales promotions. How did Wegener explain why fossils? What was significant about the discovery of ancient manuscripts by the Crusaders inthe libraries of the Muslims? the risk to human civilization from an asteroid strike is higher than one might expect because: