Question: how many atoms of hydrogen are present in 7.63 g of ammonia?
Answer: 7.63 g of ammonia contains 8.096 ﻿×﻿ 1023 H atoms . Explanation: The number of hydrogen atoms present directly corresponds to the number of moles of ammonia in consideration. The relations ﻿1 mol of NH3​→3 mol of H atoms﻿ and ﻿1 mol H atoms=6.