Explanation:
Weight loss and weight maintenance.
Muscle gain.
Improved mood.
Improved heart health.
A set of charged plates is
separated by 8.08*10^-5 m. When
2.24*10^-9 C of charge is placed
on the plates, it creates a potential
difference of 855 V. What is the
area of the plates?
(The answer is _*10^-5 m^2. Just fill
in the number, not the power.)
Answer:
2.39×10¯⁵ m²
Explanation:
From the question given above, the following data were obtained:
Distance (d) = 8.08×10¯⁵ m
Charge (q) = 2.24×10¯⁹ C
Potential difference = 855 V
Area(A) =?
NOTE: Permittivity (ε₀) = 8.854×10¯¹² F/m
The area can be obtained as follow:
q = ε₀AV/d
2.24×10¯⁹ = 8.854×10¯¹² × A × 855 / 8.08×10¯⁵
2.24×10¯⁹ = 7.57×10¯⁹ × A / 8.08×10¯⁵
Cross multiply
7.75×10¯⁹ × A = 2.24×10¯⁹ × 8.08×10¯⁵
7.75×10¯⁹ × A = 1.81×10¯¹³
Divide both side by 7.75×10¯⁹
A = 1.81×10¯¹³ / 7.75×10¯⁹
A = 2.39×10¯⁵ m²
Thus, the area of the plate is 2.34×10¯⁵ m²
Answer:
2.39
Explanation:
A certain element has two naturally occurring isotopes. The atomic mass of isotope 1 (35.4723 % natural abundance) is 184.9529 amu. Determine the atomic mass of isotope 2. The average atomic mass of the element is 186.2071 amu. Do not include units; report answer to 4 decimal places.
Answer:
the value
Explanation:
Can someone please help me!!
Answer:
Explanation:
Hope this helps u!!
An electric kettle draws a current of 6.50 A while it is plugged into a 120-V
electrical outlet. What power does the kettle use?
Answer:
780 watts
Explanation:
formula to find power when given amps and voltage
P = A x V
=6.50a x 120V
= 780 W (watts)
The pH of a solution with a [OH-] of 1x10^-6 is
Answer:
pH = 6
Explanation:
Given that,
The concentration of [OH]⁻ ion is [tex]10^{-6}[/tex].
We need to find the pH of the solution.
We know that,
[tex]pH=-\log[OH]^-[/tex]
Put all the values,
[tex]pH=-\log(10^{-6})\\\\pH=6[/tex]
Hence, the pH of the solution is 6.
The expression for the equilibrium constant for the reaction:
Ba3N2 (aq) + 6 H2O(1)-
3 Ba(OH)2 (aq) + 2 NH3 (9)
Answer:
[tex]Kc\frac{(Ba3N2)(H2O)^6}{(Ba(OH)2)^3(NH3)^2}[/tex]
Explanation:
Because kc equals products/reactants hope this helps :)
How much mass does 1 mol of O2 gas have?
O A. 16.00 x 2g
O B. 16.00 x (6.02 x 10^23) g
C. 2 x (6.02 x 10^23) g
D. 16.00 g
Answer:
Option A.
Explanation:
1 mol of anything contains 6.02×10²³ particles.
We know that 1 mol of oxygen gas contains 2 moles of O.
1 mol of oxygen weighs 16 g/mol, the mass for 1 molecule of O.
By the way, the mass for 1 mol of O₂ may be:
Option A → 16 g/mol . 2 mol
32 g
Oyxgen is a dyatomic molecule, that's why we have 2 moles of O.
Another example can be:
1 mol of water (H₂O) contains 2 moles of H and 1 mol of O.
Use the periodic table to determine the amount of copper and aluminum nitrate formed in the reaction.
Type the correct answer in the box. Express your answer to the correct number of significant figures.
In the reaction,
moles of Cu and
moles of Al(NO3)3 are formed.
Answer:
23, 51
Explanation:
Edmentum/plato
As per the balanced reaction, 2 moles of aluminum metal and 3 moles of copper nitrate gives 2 moles of aluminum nitrate and 3 moles of copper metal. 10 g of Al and 25g of copper nitrate gives 0.08 moles of aluminum nitrate and 0.13 moles of copper.
What is limiting reactant ?A limiting reactant is the reacting species which is not sufficient in amount to complete the reaction. Hence, the limiting reactant determines the yield of the reaction.
The given reaction is written as:
[tex]\rm 3Cu(NO_{3})_{2} + 2Al \rightarrow 2 Al(NO_{3})_{3} + 3Cu[/tex]
2 moles of Al and 3 moles of copper nitrate gives 2 moles of aluminum nitrate and 3 moles of Cu.
Molar mass of copper nitrate = 187.5 g/mol
atomic mass of aluminum = 27 g/mol
then, number of moles in 10 g of Al = 10 g/27 g/mol = 0.37 moles.
number of moles in 25 g of copper nitrate = 25 g/187.5 g/mol = 0.13 moles.
0.37 moles of Al needs 0.5 moles of copper nitrate to react with. Hence, copper nitrate is the limiting reactant.
3 moles of copper nitrate gives 2 moles of aluminum nitrate. Then 0.13 moles will give 2/3rd of 0.13 i e., 0.08 moles of aluminum nitrate. Similarly 0.13 moles copper nitrate gives 0.13 moles of copper metal.
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Your question is incomplete. But your complete question probably was:
10 g of aluminum metal reacts with 25 g of copper nitrate. Use the periodic table to determine the amount of copper and aluminum nitrate formed in the reaction.
In the reaction,
moles of Cu and
moles of Al(NO3)3 are formed.
The word habitable is defined as:
If the change in velocity increases, what happens to the acceleration during the same time period?
Acceleration decreases.
Acceleration increases.
Acceleration becomes negative.
Acceleration becomes steady.
Answer:
Acceleration decreases
Answer:
its b
Explanation:
The part of an atom that has an overall positive charge is called
A)
an electron
B)
the nucleus
C)
the first shell
D)
the valence shell
Answer: I think it’s B
A wheelbarrow can be used to help lift a load, such as a pile of dirt, and then push the load across a distance.
A man pushes a wheelbarrow.
Which simple machines make up a wheelbarrow?
a pulley and an inclined plane
a wheel and axle and a lever
a pulley and a wheel and axle
a lever and a wedge
Answer: it consists of two simple machines: a lever and a wheel and axle. Effort is applied to the lever by picking up the handles of the wheelbarrow.
Explanation:
Answer:
B
Explanation:
B)
The compounds that form from the bonding of the hydroxyl group (-OH) to a hydrocarbon are called the aldehydes.
True
False
Answer:
False.
I just got it right, lol.
what is a metal ore?
Answer:
metal ores are naturally occurring rocks that contain metals or metal compounds in sufficient amounts to make it worthwhile extracting them
Write the electron configuration for Gold (Au). You may choose to write it in the long form or in the noble gas configuration form (shortcut).
Answer:
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s¹4f¹⁴5d¹⁰
Explanation:
what are some different natural events and man-made activities that can affect ocean acidification?
Ocean acidification is the process of decreased pH levels of the oceans. The burning of fossil fuels and industrialization are man-made activities that lead to this process.
What is Ocean acidification?Ocean acidification is an increased concentration of acidic components of the oceans due to an increase in the carbon dioxide level of the oceans.
Human activities like cutting down a large number of trees, discharging from industrial outlets, and burning fossils like petrol, coal, diesel, etc. are leading to increased acidification of the oceans.
Therefore, natural causes like increased salinity, flood, and earthquake are the reasons for oceanic acidification.
Learn more about ocean acidification here:
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which of these elements has two valence electrons?
a. hydrogen (H)
b. barium (Ba)
c. nitrogen (N)
d. krypton (Kr)
e. bromine (Br)
Se realiza una mezcla de minerales de Cu y Fe: 20 kg FeS2 (pirita), 70 kg de Fe2O3 (hemetita) 15 kg de CuFe2 (calcopirita) y 90 kg de CuO (tenorita). Calcule: Porcentaje de hierro Porcentaje de cu Porcentaje de azufre y oxigeno
Answer:
34.78% Fe
39.66% Cu
5.48% S
20.07% O
Explanation:
Para resolver esta pregunta debemos hallar la masa de cada átomo en cada mineral. Así, podremos hallar el porcentaje de cada átomo:
Pirita (Fe: 55.845g/mol; S: 32.065g/mol; FeS2: 119.975g/mol)
Masa Fe:
20kg FeS2 * (1*55.845g/mol / 119.975g/mol) = 9.31kg Fe
Masa S:
20kg FeS2 * (2*32.065g/mol / 119.975g/mol) = 10.69kg S
Hemetita (Fe: 55.845g/mol; O: 16g/mol; Fe2O3: 159.688g/mol)
Masa Fe:
70kg Fe2O3 * (2*55.845g/mol / 159.688g/mol) = 48.96kg Fe
Masa O:
70kg Fe2O3 * (3*16g/mol / 159.688g/mol) = 21.04kg O
Calcopirita (Fe: 55.845g/mol; Cu: 63.546g/mol; CuFe2: 175.236 g/mol)
Masa Fe:
15kg CuFe2 * (2*55.845g/mol / 175.236 g/mol) = 9.56kg Fe
Masa Cu:
15kg CuFe2 * (1*63.546g/mol / 175.236 g/mol) = 5.44kg Cu
Tenorita (O: 16g/mol; Cu: 63.546g/mol; CuO: 79.545 g/mol)
Masa O:
90kg CuO * (1*16g/mol / 79.545 g/mol) = 18.10kg O
Masa Cu:
90kg CuO * (1*63.546g/mol / 79.545 g/mol) = 71.90kg Cu
Masa Total: 20kg + 70kg + 15kg + 90kg = 195kg
Porcentaje Hierro:
9.31kg Fe + 48.96kg Fe + 9.56kg Fe / 195kg * 100 =
34.78% Fe
Porcentaje Cobre:
5.44kg Cu + 71.90kg Cu / 195kg * 100 =
39.66% Cu
Porcentaje Azufre:
10.69kg S / 195kg * 100 =
5.48% S
Porcentaje Oxígeno:
21.04kg O + 18.10kg O/ 195kg * 100 =
20.07% O
Calculate the pressure kPa of 0.421 mole of helium gas at 254 degree celsius when it occupies a volume of 3.32 L.
How many silicons atoms are there in 0.0356 moles of silicon
Answer:
2.14 × 10²² atoms Si
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TableMolesStoichiometry
Using Dimensional AnalysisExplanation:
Step 1: Define
Identify
[Given] 0.0356 mol Si
[Solve] atoms Si
Step 2: Identify Conversions
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.
Step 3: Convert
[DA] Set up: [tex]\dipslaystyle 0.0356 \ mol \ Si(\frac{6.022 \cdot 10^{23} \ atoms \ Si}{1 \ mol \ Si})[/tex][DA] Multiply [Cancel out units]: [tex]\dipslaystyle 2.14383 \cdot 10^{22} \ atoms \ Si[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
2.14383 × 10²² atoms Si ≈ 2.14 × 10²² atoms Si
[tex]what \: is \: acid \: \: \: {?} [/tex]
meaning:An acid is a chemical substance, usually a liquid, which contains hydrogen and can react with other substances to form salts. Some acids burn or dissolve other substances that they come into contact with.
Answer:
Hope it help you#CarryOnLearningCalculate the molarity of the following solution: 1.0 mole of KCl in .75 L of solution.
1.3 M
2.0 M
0.750 M
99 M
Answer:
1.3 M
Explanation:
1 mole= Concentration * Volume
1 mole=C*0.75 L
C=1.3 M
which of the following is a property of acids
A. they are slippery
B. They taste bitter
C. They react with oils
D. they are sour
Answer:
They are sour. =)
Explanation:
Question
Calculate the total energy, in kilojoules, that is needed to turn a 35 g block
of ice at -10 degrees C into water vapor at 100 degrees C.
Answer:
34545 J
Explanation:
Applying,
E = mc'+cm(t₂-t₁)+Cm(t₂-t₀).............. Equation 1
Where E = Total energy, m = mass of the ice, c' = latent heat of ice, c = specific heat capacity of ice, t₂ = final temperature, t₁ = initial temperature, C = specific heat capacity of water, t₀ = temperature of ice at 0°C
From the question,
Given: m = 35 g = 0.035 kg, t₁ = -10°C, t₂ = 100°C, t₀ = 0°C
Constant: C = 4200 J/kg.K, c = 2100 J/kg.K, c' = 336000 J/kg
Susbtitute these values into equation 1
E = [336000(0.035)]+[0.035×2100(100+10)]+[4200×0.035(100-0)]
E = 11760+8085+14700
E = 34545 J
2. When we lift a stool, its ____________
A) gravitational potential energy is increased
B) gravitational potential energy is decreased
C) kinetic energy is decreased
D) gravitational potential energy remains unchanged
A.)
Standing on an elevated ledge would be more potential energy than standing on the ground. Same applies for anything else -- Including a chair!
Based on your understanding of how bond types influence a material’s properties, identify each of the following compounds as being made of ionic, covalent, or metallic bonds.
ANSWER
Steel: Metalic
Propane: Covalent
Calcium chloride: ionic
Water: Covalent
Edge 2021
Answer: The given compounds are identified as being made of ionic, covalent, or metallic bonds:
Steel - Metallic bondsPropane - Covalent bondsCalcium chloride - Ionic bondsWater - Covalent bondsExplanation:
A bond formed by transfer of electrons from one atom to another is called an ionic bond. An ionic bond is formed between a metal atom and a non-metal atom.
A bond formed by transfer of electrons from one atom to another is called a covalent bond. A covalent bond is formed between two or more non-metal atoms only.
Steel is actually an alloy of carbon and iron where there is less than 2% carbon, 1% manganese and small amounts of silicon, phosphorus, oxygen and sulphur are present.
When atoms of metals are held together then bond formed between these atoms is called metallic bond.
Hence, steel is made of metallic bond.
Chemical formula of propane is [tex]CH_{3}CH_{2}CH_{3}[/tex] as there are only non-metal atoms are present. So, sharing of electrons takes place in such atoms due to which covalent bonding will be there.
Hence, propane is made up of covalent bonds.
Calcium chloride contains a metal and a non-metal atom. This means that electrons are being transferred from calcium atom to the chlorine atom. Hence, bond present in calcium chloride is ionic bond.
Water has chemical formula [tex]H_{2}O[/tex]. Since, non-metal atoms are present there so sharing of electrons takes place between hydrogen and oxygen atoms. Hence, covalent bond is present in water.
Thus, we can conclude that given compounds are identified as being made of ionic, covalent, or metallic bonds:
Steel - Metallic bondsPropane - Covalent bondsCalcium chloride - Ionic bondsWater - Covalent bondsSteel: ✔ metallic
Propane: ✔ covalent
Calcium chloride: ✔ ionic
Water: ✔ covalent
What type of molecule is shown below?
A. Ether
B. Alcohol
C. Aldehyde
D. Ketone
The given molecule is an aldehyde with the formula HCHO. It is the simplest and primary aldehyde . Hence, option c is correct.
What are aldehydes ?Aldehydes are a class of organic compounds that contain a carbonyl group (a carbon double-bonded to an oxygen) at the end of a carbon chain. The general formula for an aldehyde is RCHO, where R is a substituent or side chain attached to the carbonyl group.
Aldehydes are often characterized by their distinctive odor, which can be described as pungent and irritating. Some common aldehydes include formaldehyde (used in building materials and as a disinfectant), acetaldehyde (found in alcoholic beverages), and benzaldehyde (used in food flavorings).
Aldehydes are important intermediates in many chemical reactions, and they are used in a variety of industrial and laboratory applications. They can be synthesized by the oxidation of primary alcohols or by the partial oxidation of hydrocarbons. The given compound is formaldehyde HCHO.
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three functions of the stem
The three functions of the stem:
To support the leaves,To conduct water, and To conduct minerals to the leaves.how many moles are in 150 grams of water
Answer:
Solution given:
H20=1+1+16=18grams
we have
1 mole of water =18grams
now
150grams of water=1/18*150=25/3 =8.33mole.
150 grams of water =8.33mole.
Note:
mole =given mass/actual mass of molecule/atom
1 mole of water is 18 grams.
Then,
150 grams of water,
→ 1/18 × 150
→ 25/3
→ 8.33333 . . .
Hence, 150 grams of water is 8.3 moles.
HELPPPP pleaseeeeee!!!!
Answer:
Length=Meter
Mass=Kilogram
Time=Second
Explanation:
Si is the International System of Units and means not just the U.S metric system.
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