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madreJ [45]
3 years ago
13

How many moles of magnesium are 5.231 X 1023 atoms of magnesium?

Chemistry
1 answer:
Aleks04 [339]3 years ago
6 0

Answer:

0.87 moles

Explanation:

Given data:

Number of moles of magnesium = ?

Number of atoms of magnesium = 5.23 × 10²³ atoms

Solution:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance.

The number 6.022 × 10²³ is called Avogadro number.

For example,

one mole = 6.022 × 10²³ atoms

5.23 × 10²³ atoms  × 1 mol / 6.022 × 10²³ atoms

0.87 moles

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Answer:

In a chemical reaction, chemical equilibrium is the state in which the forward reaction rate and the reverse reaction rate are equal. The result of this equilibrium is that the concentrations of the reactants and the products do not change.

Explanation:

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3 years ago
3 A soil has 70% sand, 20% silt
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7 0
3 years ago
Which one of the following best represents the predicted approximate chemical shift and coupling:
mezya [45]

Answer:

C. 3.40 ppm, singlet

Explanation:

Given the information from the question .we have to select the best representation for represents the predicted approximate chemical shift and coupling for hydrogen(s). In this case, there is no neighboring hydrogen .Thus there won’t be any split .the best option answer is C. 3.40 ppm, singlet . Therefore the correct answer or option is C. 3.40 ppm, singlet.

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3 years ago
calculate the volume od a CO2 cartridge that has a pressure of 850 PSI at a temperature of 21ºc the cartridge contains 0.273 mol
gladu [14]
Answer is: volume of CO₂ is 0,113 dm³.
Ideal gas law = pV = nRT.
p = 850 PSI = 5860543,6992 Pa.
Psi <span>is the abbreviation of pound per square inch.
T = 21</span>°C = 294,15 K.
n = 0,273 mol.
R = 8,314 J/K·mol.
V = nRT ÷ p
V = 0,273 mol · 8,314 J/K·mol · 294,15 K ÷ 5860543,6992 Pa.
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3 0
3 years ago
A sample of silver metal contains 1.91 X 1021 atoms. How many moles of silver is<br> this?
alexandr402 [8]

Answer:

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Explanation:

need thanks and make me brainiest if it helps you

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