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3 years ago

What is the mass of 1.72 moles of BaSO4?

Chemistry

1 answer:

Fiesta28 [93]3 years ago

3 0

Answer: 401.4g

Explanation:

The mass can be calculated by using the following mathematical expression for Moles ,which is:

Moles = Mass / Molar Mass

From the question given, Moles = 1.72, Molar mass of BaSO4 = 233.38g/mol, Mass =?

Making 'Mass' the subject of formula, we get:

Mass = Molar mass x Moles

= 233.38 x 1.72 = 401.4g

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Explanation:

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3 years ago

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$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

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$\Delta S_{sys}=\frac{\Delta H_{vap}}{T(\text{ in K)}}$

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Putting values in above equation, we get

$\Delta S_{sys}=\frac{5.828}{329.2}=0.0177kJ/Kmol=17.7J/Kmol$ (Conversion Factor: 1 kJ = 1000J)

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Answer:

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