Question

How many grams of N2 are in 3.0 x 1023 molecules of N2?

Answer 1

The mass of 3.0 x 10²³ molecules of nitrogen gas is 13.95 g.

Mass of the Nitrogen gas

The mass of one mole of Nitrogen gas is 28 g/mol.

Number of atoms

The number of atoms in one mole of Nitrogen gas is 6.022 x 10²³ molecules.

The mass of Nitrogen gas in the given number of molecules is calculated as follows;

6.022 x 10²³  --------------------- 28 g/mol

3.0 x 10²³ ----------------------------- ?

$= \frac{3.0 \times 10^{23} \times 28}{6.022 \times 10^{23} } \\\\= 13.95 \ g$

Thus, the mass of 3.0 x 10²³ molecules of nitrogen gas is 13.95 g.

Learn more about mass of gas molecules here: brainly.com/question/11641158