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Elanso
13 days ago
11

Calculate the theoretical density of iron, and then determine the number of vacancies per cm3 needed for a BCC iron crystal to h

ave a density of 7.874 g/cm3 . The lattice parameter of iron is 2.866 * 10-8 cm.
Chemistry
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VMariaS [2998]

Answer:

m_{Mg}=30.8mgMg

Explanation:

Greetings,

According to the provided chemical equation, the production of 31.2 mL of hydrogen allows one to calculate its moles using the ideal gas equation as detailed below:

n_{H_2}=\frac{PV}{RT}=\frac{754torr*\frac{1atm}{760torr}*0.0312L}{0.082 \frac{atm*L}{mol*K}*298.15K}=1.27x10^{-3}molH_2

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m_{Mg}=1.27x10^{-3}molH_2*\frac{1molMg}{1molH_2}*\frac{24.305gMg}{1molMg}*\frac{1000mgMg}{1gMg}\\m_{Mg}=30.8mgMg

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Which statement best describes the direction of heat flow by conduction between two samples of the same material?
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Is N2 + H2 →NH4 a balanced chemical equation? Is it obeying the law of conservation of matter?
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The response is:

No, the equation is not balanced. Neither the Nitrogen (N) nor the Hydrogen (H) are in balance!

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