change the following word equations into balanced equations

a) Hydrogen + Chlorine → Hydrogen chloride.

b)Hydrogen + Nitrogen→ Ammonia

c)Aluminium + sulphuric acid → Aluminium sulphate + Hydrogen

d)Iron (3) + oxygen → iron oxide

e)Copper + sulphuric acid → Copper sulphate + water + sulphur dioxide.

Answers

Answer 1

Answer:

Q

Explanation:


Related Questions

An atom X has a proton number of 19 and relative atomic mass of 39.

(i) How many electrons, protons and neutrons are there in an atom of X?

(ii) How many electrons will there be in the outer energy level (shell) of an atom of X?

(iii) What is the electronic configuration of X?

Answers

Answer:

1) electron=19 Proton=19 Neutron=39-19=20

2) 1

3) in pic

Answer:

(i)electrons = 19; Protons = 19 Neutrons =39-19=20

(ii) 1

(iii) 2,8,8,1

Hope this helps.

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What happens when a chlorine atom gains an electron in its outer energy shell? A. It has an increase in the number of protons B. It becomes a negative ion C. It becomes a positive ion D. It has a decrease in the number of neutrons

Answers

Answer:

When a chlorine atom gains an electron, its outermost principal energy level achieves an octet. In this case, the ion has the same outermost shell as the original atom, but now that shell has eight electrons in it. Once again, the octet rule has been satisfied.

Explanation:

How many significant figures
are in this number?
107.051

Answers

Answer:

there are 6 significant figures in 107.051

Answer:

There Are 6 Significant Numbers

Explanation: But some problems stop at the . so it could 3 if im right but go with 6!

What is the name of this compound? H single bonded to N with a pair of electron dots above and a single bond to H below, single bonded to the right to C with H above and below, and another C with H above, below, and right.

Answers

Answer:

Ethanamine (also known as ethylamine)

Explanation:

The compound that is requested by the question is ethanamine. Its trivial name is ethylamine.

It is a compound that contained the ethyl moiety (CH3CH2-) as well as the amine moiety (-NH2).

Ethanamine has a structure that can easily be determined by the statements in the question.

The structure of ethanamine is shown in the image attached.

Answer:

What is the name of this compound?

                                                                                    H       H

                                                                                    │       │

                                                               H ── N ── C ── C ── H

                                                                          │       │        │

                                                                          H      H        H

❌ A) ethanal

✔️B) ethylamine

❌ C) ethanoic acid

❌ D) methyl ethanoate

I Took Question Test And Have Day.

What are half reaction

Answers

Answer:

When you don't have a complete reaction.

Explanation:

Happens a lot between a solvent and a solute. The solute may not bind well with the solvent I.e. water.

If your talking about oxidation, the answer would be
the part of the reaction involving oxidation or reduction

clearly distinguish between science and technology​

Answers

Answer:

The words science and technology can and often are used interchangeably. But the goal of science is the pursuit of knowledge for its own sake while the goal of technology is to create products that solve problems and improve human life. Simply put, technology is the practical application of science.

Explanation:

Check the following images

Hope it helps!!!

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What u learned about the states of matter?

Answers

Answer:t

Explanation:

In everyday life, four states of matter are visible: solid, liquid, gas, and plasma.

Of course, matter also has other states, such as Bose-Einstein density and Fermion density, but these states are only observed under certain conditions.

how much energy has your body used, in joules, if your health device indicates that 450 calories were burned during your workout

Answers

Answer:

Total energy consumed = 1,882.8 joules

Explanation:

Given:

Calories burned = 450 calories

Find:

Total energy consumed

Computation:

1 calorie = 4.184 joules

So,

450 calories = 4.184 × 450

450 calories = 1,882.8 joules

Total energy consumed = 1,882.8 joules

which of the following flouride has the highest lattice energy a)NaF b)KF c)CsF d)LiF

Answers

Answer:

The correct option is;

d) LiF

Explanation:

The Lattice energy of ionic compounds can be calculated using the modified Coulomb's law as follows;

[tex]U = \dfrac{k' \cdot Q_1\cdot Q_2}{r_0}[/tex]

Where;

Q₁ and Q₂ =  The ionic charges

k' = A constant depending on the ionic and valence configuration

r₀ = The distance between the two nucleus

Given the four compounds each of the metallic ions are of the same group (group one) have the same (only one) valence electron, and are combined to the same ion (fluoride ion) such that Q₂, is the same for all compounds, the factor that will influence the lattice energy more will be the r₀

The sizes of the atoms Li, Na, K and Cs increases as arranged as such Li has the least r₀, and therefore LiF the least  lattice energy

From chemistry test online, we have;

The lattice energy of LiF = -1045 kJ/mole

The lattice energy of NaF = -924 kJ/mole

The lattice energy of KF = -822 kJ/mole

The lattice energy of CsF = -737 kJ/mole.

Can some of you guys give me the Hexane combustion equation?​

Answers

Answer:

C6H14 + 13/2O2 -------> 6CO2 + 7H2O

Explanations

combustion means burning with excess oxygen

If an object's mass is 70 g, and its volume is 10cm cubed, what is its density?

Answers

The answer is 7,000

If an object's mass is 70 g, and its volume is 10cm cubed,  its density is 7 centimeter cube.

What is density?

The density of any solid substance is the unit of the area occupied by it in per centimeter of the cube of the volume in the given sample and calculated by dividing the mass and the volume of the compound unit will be centimeter cube.

The mass of the given object is 70 gram and the volume is given is 10 cm to find the density,

                       Density = mass of object / volume of object

substituting the value in the formula,

                 Density = 70 / 10

                 Density = 7 centimeter cube.

Therefore, the density of the given object will be 7 centimeter cube if  an object's mass is 70 g, and its volume is 10cm cubed.

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Does the wavelength of light (R.O.Y.G.B.I.V.) affect a plant’s growth?


Answers

Answer:

YES

Explanation:

If we put a plant in a room with an orange light source, then it will grow more efficiently than a plant exposed to other colors.

Yes the wavelength of light (R.O.Y.G.B.I.V.) affect a plant’s growth.

What is wavelength of light ?

The wavelength of light can be defined as the distance between the two successive  troughs of the light wave, and  It is denoted by the Greek letter lambda (λ), simply it can be said as the distance between one crest or trough of one wave and the next wave is known as wavelength.

The Visible Light having wave length ranges from 400 nm to 700 nm and the spectrum of visible light has a number of colors having different wavelengths.

For example, The violet color have the shortest form of wavelength whereas the red color have the longest wavelength, wavelength is inversely proportional to the frequency like  longer the wavelength of the light have lower is the frequency.

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Use the periodic table to determine which element the following spin diagram
represents:

(Using the image)

A. nitrogen
B. Oxygen
C. None of these
D. Boron

Answers

Answer:

B. Oxygen

Explanation:

Basically count each arrow since each arrow represents an electron. Then use the periodic table to find the element with 8 electrons, which is oxygen. Also, if you know the orbital patterns, you can identify that the 2p orbital represents an element in Group 16.

how many moles of copper are equivalent to 3.44x10^23 atoms of copper?

Answers

Answer:

0.571moles

Explanation:

The Avogrado's number or constant denoted by NA will be used for this question.

The Avogrado's number = 6.022 × 10^23 particles, is contained in 1 mole of a substance.

To get the number of atom/particles in a substance, the formula: N= n × NA is used.

Where; N= Number of atoms in

substance

n= number of moles

NA= Avogadro's constant

Hence, to find the number of moles of copper equivalent to 3.44 × 10^23, we say: n= N / NA

That is, n = 3.44 × 10^23 / 6.022 × 10^23

= 0.5712

Therefore, 0.571 moles of Copper (Cu) is equivalent to 3.44 × 10^23 atoms of Copper.

How do weathering and deposition differ? Weathering breaks down rocks; deposition leaves them in new places. Weathering has to do with air; deposition has to do with plants. Weathering occurs only in summer; deposition occurs year-round. Weathering can be chemical or physical; deposition is only chemical

Answers

Answer:

A. Weathering breaks down rocks; Deposition leaves them in new places.

Explanation:

Weathering is basically the complete process of rocks breaking apart.  In contrast, deposition is when the rocks are moved and carried away from their original place and put in new locations.

Answer:

a

Explanation:

What would be the pH of an HNO3 solution if the [H+] = 3.26 x 10-6 moles/liter? 5.49 4.67 6.32

Answers

Answer:

5.49

Explanation:

pH = - log[3.26 x 10-6] =5.49

Chromium is dissolved in sulfuric acid according to the following equation: Cr + H2SO4 ⇒ Cr2 (SO4) 3 + H2


a) How many grams of Cr2 (SO4) 3 can be obtained by reacting 165 g of 85.67% H2SO4 of purity?

b) If 485.9 g of Cr2 (SO4) 3 are obtained, what is the yield of the reaction?

Answers

Answer:

[tex]\large \boxed{\text{a)188.4 g; b) 98.67 $\, \%$}}[/tex]

Explanation:

We will need a balanced chemical equation with masses and molar masses, so, let's gather all the information in one place.

Mᵣ:                      98.08           392.18

             2Cr + 3H₂SO₄ ⟶ Cr₂(SO₄)₃ + 3H₂

To solve the stoichiometry problem, you must

Use the molar mass of H₂SO₄ to convert  the mass of H₂SO₄ to moles of H₂SO₄ Use the molar ratio to convert moles of H₂SO₄ to moles of Cr₂(SO₄)₃ Use the molar mass of Cr₂(SO₄)₃ to convert moles of Cr₂(SO₄)₃ to mass of Cr₂(SO₄)₃

a) Mass of Cr₂(SO₄)₃

(i) Mass of pure H₂SO₄

[tex]\text{Mass of pure} = \text{165 g impure} \times \dfrac{\text{85.67 g pure} }{\text{100 g impure}} = \text{141.36 g pure}[/tex]

(ii) Moles of H₂SO₄

[tex]\text{Moles of H$_{2}$SO}_{4} = \text{141.36 g H$_{2}$SO}_{4} \times \dfrac{\text{1 mol H$_{2}$SO}_{4}}{\text{98.08 g H$_{2}$SO}_{4}} = \text{1.441 mol H$_{2}$SO}_{4}[/tex]

(iii) Moles of Cr₂(SO₄)₃

The molar ratio is 1 mol Cr₂(SO₄)₃:3 mol H₂SO₄ [tex]\text{Moles of Cr$_{2}$(SO$_{4}$)}_{3} = \text{1.441 mol H$_{2}$SO}_{4} \times \dfrac{\text{1 mol Cr$_{2}$(SO$_{4}$)}_{3}}{\text{3 mol H$_{2}$SO}_{4}} = \text{0.4804 mol Cr$_{2}$(SO$_{4}$)}_{3}[/tex]

(iv) Mass of Cr₂(SO₄)₃ [tex]\text{Mass of Cr$_{2}$(SO$_{4}$)}_{3} = \text{0.4804 mol Cr$_{2}$(SO$_{4}$)}_{3} \times \dfrac{\text{392.18 g Cr$_{2}$(SO$_{4}$)}_{3}}{\text{1 mol Cr$_{2}$(SO$_{4}$)}_{3}} = \textbf{188.4 g Cr$_{2}$(SO$_{4}$)}_{3}\\\text{The mass of Cr$_{2}$(SO$_{4}$)$_{3}$ formed is $\large \boxed{\textbf{188.4 g}}$}[/tex]

b) Percentage yield

It is impossible to get a yield of 485.9 g. I will assume you meant 185.9 g.

[tex]\text{Percentage yield} = \dfrac{\text{Actual yield}}{\text{Theoretical yield}} \times 100 \, \% = \dfrac{\text{185.9 g}}{\text{188.4 g}} \times 100 \, \% = \mathbf{98.67 \, \%}\\\\\text{The percentage yield is $\large \boxed{\mathbf{98.67 \, \%}}$}[/tex]

Question number 4..​

Answers

Answer:

I think it's 7089 because that's my answer to your questions

What group is calcium and sodium in?

Answers

Answer:

Calcium: Alkaline Earth

Sodium: Alkali Metal

Hope it helps!

Answer:

Calcium is in Alkaline Earth

Sodium is in Alkali Metal

Three determinations were made of the following percentage of oxygen in mercuric oxide. The results were 7.40%, 7.43%, and 7.35%. What was the average percentage?

Answers

7.39% Hope that helps! :)

• Calculate relative formula masses from formulae and
from balanced equations?

Answers

Answer:

Explanation:

Simple molecules have very small masses. Instead of writing their actual masses in grams or kilograms, we usually use their relative formula masses. These are calculated using the chemical formula and the relative atomic masses of the elements in it.

Relative formula mass

Relative atomic mass has the symbol Ar. The Ar for an element is a measure of the mass of its atoms compared to the mass of carbon-12 atoms. The greater the Ar value, the more mass an element's atoms have. The periodic table shows the Ar value for each element. For example, the Ar for carbon is 12, and the Ar for magnesium is 24. This means that a magnesium atom has twice the mass of a carbon atom.

Calculating relative formula mass

Relative formula mass is given the symbol Mr. To calculate the Mr for a substance:

work out how many atoms of each element there are in the chemical formula

add together the Ar values for all the atoms of each element present

For example, the formula for carbon dioxide is CO2. It consists of one carbon atom (Ar = 12) and two oxygen atoms (Ar = 16):

Mr of CO2 = 12 + 16 + 16 = 44

It could also be calculated this way:

Mr of CO2 = (1 × 12) + (2 × 16) = 12 + 32 = 44

Ar and Mr values are just numbers. They have no units because they are relative masses.

Relative formula masses of ionic compounds

Ionic compounds such as sodium chloride do not exist as molecules. However, their relative formula masses are calculated in the same way. The formulae used are their empirical formulae.

What is 9.871 x 10^-3 in standard form? *

Answers

Answer:

0.009871

Explanation:

[tex] 9.871\times 10^{-3} = 0.009871[/tex]

Answer:

.009871

Explanation:

What is the atomic number of copper

Answers

Answer:

29

Explanation:

Copper is a chemical element with the symbol Cu and atomic number is 29

Explanation:

which of the following molecules would you expect to be optically active

1. CCl2F2
2. 2-methyl butane
3. butan-2-ol​

Answers

Answer:

waaaaaaaaaaqwwwwwwwwwwww

What element is depicted by the following electron configuration:

(The electron configuration is in the image)




A. None of these
B. Oxygen
C. Chlorine
D. Sulfur

Answers

Explanation:

Your required answer is sulpher.

Hope it helps...

what is the scientific term for salt​

Answers

Answer:

The scientific term for table salt is Sodium chloride.

Explanation:

The answer is sodium chloride.

It is composed of sodium and chloride. Like,

[tex] {na}^{ + } + {cl}^{ + } = nacl[/tex]

so, it's name is sodium chloride.

Which of the following statements is true? A. Isotopes of the same element have the same number of protons and neutrons. B. Isotopes have the same physical properties as the normal atom but different chemical properties. C. Isotopes have the same chemical properties as the normal atom but different physical properties. D. If an isotope of one element has the same atomic mass as another element, they will have the same properties.

Answers

Answer:

B

Explanation:

Isotopes have the same number of protons but different number of neutrons.

The true statement is,

Isotopes have the same chemical properties as the normal atom but different physical properties.

So, option C is correct one.

What is isotopes?The elements have same number of proton but different number of neutrons.Example: hydrogen, deuterium, tritium

Why isotopes of same elements have different physical properties?

The isotopes have different physical properties like freezing point , mass, melting or boiling point etc because they have different mass number .

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Define freezing....... Correct and detailed answers will be marked as Brainliest.

Answers

Freezing:

The transformation of liquid into solid when it reaches when it's temperature is below freezing point.

Answer:

Freezing:

When liquid is converted to solid, the process is called freezing.

Conditions for freezing:

1) Temperature must be lowered.

2) The temperature should be below 0 degree centigrade.

Example:

The conversion of "liquid water" into "ice".

=> We can use a "freezer" to freeze things.

1. The Tyndall Effect is most useful for distinguishing between: *
a solute and a solvent
O a suspension and a solution
a colloid and a suspension
a colloid and a solution

Answers

Answer:

a colloid and a solution

Explanation:

When solute particles completely dissolve in a solvent, a true solution is formed. The solute particles in this case are so little that they can not be seen with naked eyes. A true solution does not scatter rays of light.

In a false solution, the solute particles are larger than the solute particles in true solutions but are not large enough to be seen with naked eyes. False solutions scatter rays of light. False solutions are also called colloids.

The major difference between a solution and a colloid is that colloids scatter light rays (Tyndall effect) while a true solution does not scatter light rays.

how many carbon atoms are in .650 gram tablet of aspirin (C9H8O4)?​

Answers

Answer:

For example, in a molecule of aspirin, C9H8O4, there are 9 carbon atoms, 8 hydrogen atoms and 4 oxygen atoms. compound.

Explanation:

The carbon atoms are in 0.650 gram tablet of aspirin (C9H8O4) is 3.24 x 10² atoms.

What are atoms?

Atoms are defined as the smallest unit of matter that can be divided without releasing electrically charged particles.

After the Big Bang, the building blocks of matter were generated is known as atoms.

Molar mass of aspirin = 180.2 g

Number of carbon atoms

= 0.650 g x 1 mole aspirin / 180.2 g x 9 / 1 mole aspirin

= 3.24 x 10² atoms

Thus, the carbon atoms are in 0.650 gram tablet of aspirin (C9H8O4) is 3.24 x 10² atoms.

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What tends to happen to the accuracy of our savings goals as our investment horizon becomes longer? A. It is not useful to have long-term savings goals. B. We are less able to accurately estimate the amount we will need. C. We can estimate the amount we need more accurately. D. The accuracy of our savings goals doesn't change. Qu pasa si el coeficiente del trmino cuadrtico no es 1? (Please help will give brainliest)Which scenario goes with the vocabulary word cubrir?Mara tiene picor de la piel.Gustavo estornuda mucho.Laura necesita ir al terapeuta.Felipe bebe agua para estar saludable. Read the poem "Bacchus's Regret" by Hunter Doyle and answer the question. [1] King Midas returned my beloved teacher to me, so I rewarded him with a wishwhatever he wanted would be. Midas cried, "Give my fingers a golden touch! Then, I shall have a gilded kingdom and such." [5] I tried to make him see the err of his choice, but he would not heed the caution in my voice. I pleaded with Midas, "Be careful what you choose, for you're only thinking of what you'll gainnot what you'll lose." [9] His thirst for wealth became no match for his appetite; after all, a gold apple is not something one can bite. His daughter wept for her poor starving dad, so he wiped her tears and told her not to be sad. [13] Into a golden statue Midas's daughter became, and he and his greedy wish were ultimately to blame. Yet, maybe if I had put up more of a fight and a fret, then I wouldn't have to live with all this regret. Select the line that best supports the theme people must live with the consequence of their choices. "King Midas returned my beloved teacher to me, / so I rewarded him with a wishwhatever he wanted would be." (Lines 12) "I tried to make him see the err of his choice, / but he would not heed the caution in my voice." (Lines 45) "His daughter wept for her poor starving dad, / so he wiped her tears and told her not to be sad. 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Factor should choose to: which function's graph has asymphotes located at the values x=+=n pi ? 1. y=csc x 2. y= cos x 3. y=tan x 4. y=cot x answer choices: A. 2 only B. 1 and 4 only C. 1 only D. 1 and 3 only please help!! ): an elevator at a museum can travel 210 m upwards in 35 s. what is the elevators velocity nombra todos los personajes de cocori We the people of the United States in order to form a more perfect union establish justice insure domestic tranquility provide for the common defence promote the general welfare and secure the blessings of liberty to ourselves and our prosperity do ordain and establish this constitution for the United States of America which idea is expressed in this excerpt of the Constitution A ________ externality exists when the number of customers who purchase a good or use it influences the quantity demanded. The combined weight of three basset hounds is 185 pounds. The two smaller dogs weigh the same. The difference between the larger weight and the smaller weight is 20 pounds. How many pounds does the largest dog weigh? Can someone help find the domain and range A government bond with a coupon rate of 5% makes semiannual coupon payments on January 12 and July 12 of each year. The Wall Street Journal reports the asked price for the bond on January 27 at $1,004.375. What is the invoice price of the bond? The coupon period has 182 days. In the figure below. MN is the arc of a circle with center L. If the length of arc MN is 6, what is the area of sector LMN? Using the right triangle below, find the tangent of angle B.A60003-13300B A rope is cut into three pleces. The lengths are given as 2ab(a - b), 3^2(a + 2b), and b^2 (2a - b).The expression representing the total length of the rope is_____?If a = 2 inches and b = 3 inches, the total length of the rope is ____?inches. pls help...1.The given right rectangular prism is composed of small cubes. Find the following is the volume of the prism and the volume of one of the small cubes. what does distribution of population refers to? Currents in DC transmission lines can be 100 A or higher. Some people are concerned that the electromagnetic fields from such lines near their homes could pose health dangers. A. For a line that has current 150 A and a height of 8.0 m above the ground, what magnetic field does the line produce at ground level? Express your answer in teslas. B. What magnetic field does the line produce at ground level as a percent of earth's magnetic field which is 0.50 G? C. Is this value of magnetic field cause for worry? Choose your answer below. i. Yes. Since this field does not differ a lot from the earth's magnetic field, it would be expected to have almost the same effect as the earth's field. ii. No. Since this field is much lesser than the earth's magnetic field, it would be expected to have less effect than the earth's field. iii. Yes. 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