Determine the mass of 9.2 x 10^18 molecules of dinitrogen tetroxide.

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Chemistry

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23 May, 01:09

Determine the mass of 9.2 x 10^18 molecules of dinitrogen tetroxide.

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Giovani Sweeney · Answer 1

Answer: 1.4x10-3 g N2O4

Explanation: First convert molecules of N2O4 to moles using Avogadro's Number. Then convert moles to mass using the molar mass of N2O4.

9.2x10^18 molecules N2O4 x 1 mole N2O4 / 6.022x10²³ molecules N2O4

= 1.53x10-5 moles N2O4

1.53x10-5 moles N2O4 x 92 g N2O4 / 1 mole N2O4

= 1.4x10-3 g N2O4