2 years ago

A sample of copper is 5 moles. How many atoms of copper are present?

Chemistry

1 answer:

Eduardwww [97]2 years ago

8 0

Answer:

Explanation:

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2 years ago

An atom has the electron arrangement 2,8. What will it do to gain a full

777dan777 [17]

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3 years ago

The gaseous product of a reaction is collected in a 25.0L container at 27.0 C. The pressure in the container is 3.0atm and the g

NeX [460]

Answer: The molar mass of the gas is 31.6 g/mol

Explanation:

According to ideal gas equation:

$PV=nRT$

P = pressure of gas = 3.0 atm

V = Volume of gas = 25.0 L

n = number of moles = ?

R = gas constant = $0.0821Latm/Kmol$

T =temperature = $27.0^0C=(27.0+273)K=300K$

$n=\frac{PV}{RT}$

$n=\frac{3.0atm\times 25.0L}{0.0821 L atm/K mol\times 300K}=3.04moles$

Moles = $\frac{\text {given mass}}{\text {Molar mass}}$

$3.04=\frac{96.0g}{\text {Molar mass}}$

${\text {Molar mass}}=31.6g/mol$

The molar mass of the gas is 31.6 g/mol

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2 years ago

Which terms means the loudness of sound?

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The answer is D, pitch.

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3 years ago

Name three physical properties that differentiate oxides from hydroxide group of minerals.

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2k20

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