Seven grams of nitrogen, N₂, (N, atomic mass 14 amu)contains ________. A)1 mole of nitrogen atoms B)0.5 moles of nitrogen atoms C)0.25 moles of nitrogen atoms D)Not enough information is given

Question

Quizplus · Accepted Answer

To calculate the number of moles of nitrogen atoms, first we need to find the number of nitrogen atoms in 7 grams of nitrogen. Molar mass of N₂ = (1x14) + 1 + (12x32) +1 = 452 g/mol Number of moles of nitrogen atoms = 7 g / 452 g/mol = 0.0155 mol Number of nitrogen atoms = 0.0155 mol x 6.022 x 10^23 atoms/mol = 9.34 x 10^21 atoms Therefore, there are 0.5 moles of nitrogen atoms in 7 grams of nitrogen.

Seven Grams of Nitrogen, N2, (N, Atomic Mass 14 Amu)contains

Seven Grams of Nitrogen, N₂, (N, Atomic Mass 14 Amu)contains