Question

Given 10.0 g of each of the following elements (N2, O2, C, S) choose the correct answer from the following choices.

Highest number of atoms:
a) Greatest molar mass:
b) Greater number of molecules: Ny or O,
c) Calculate the number of moles of Natoms in 1.00 x1022 Ny molecules.

Answer 1

To find the number of moles of N atoms in 1.00 x 1022 N2 molecules, divide the number of molecules by Avogadro's number to get moles of N2, then multiply by 2, since each molecule of N2 has two N atoms, yielding 0.0332 moles of N atoms.

Step-by-step explanation:

To calculate the number of moles of N atoms in 1.00 x 1022 N2 molecules, we first need to consider the relationship between moles, molecules, and Avogadro's number. Avogadro's number, which is 6.02 x 1023, represents the number of entities in one mole of a substance. Therefore, we can use the ratio of the given number of molecules to Avogadro's number to find the moles of N2.

For N2, each molecule contains 2 atoms of nitrogen. Here's the calculation:

Number of moles of N2 molecules = 1.00 x 1022 molecules / 6.02 x 1023 molecules/mol = 0.0166 moles of N2.

Number of moles of N atoms = 0.0166 moles of N2 x 2 = 0.0332 moles of N atoms.

This is because each mole of N2 contains two moles of N atoms.