Question

Calculate the mass of the dinitrogen tetroxide (N2O4) That contains 1 trillion (1.00x10^12) Nitrogen atoms. Be sure your answer has a unit symbol of necessary, and around it to the significant digits

Answer 1

N2O4

We know this:

Molecular weight of N2O4 = 92.0 g/mol

N2O4 contains in it 2 atoms of N.

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So,

92.0 g of N2O4 ---------------- 2 atoms of N

x ---------------- 1.00x10^12 atoms of N

x = ( 1.00x10^12 atoms x 92.0 g ) / 2 atoms = 4.6x10^13 g of N2O4

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Answer: 4.60x10^13 g of N2O4