The mineral leadhillite,which is essentially Pb₄(SO₄)(CO₃)₂(OH)₂ (FW = 1079 g/mol),contains ____% hydrogen by mass.

Question

Quizplus · Accepted Answer

To find the percent hydrogen by mass in leadhillite, first identify the number of hydrogen atoms in the formula, which is 2 (from the 2 OH groups). The molar mass of hydrogen is approximately 1 g/mol, so the total mass of hydrogen in the formula is 2 g/mol. The formula weight of leadhillite is given as 1079 g/mol. The percent by mass of hydrogen is then calculated as (2 g/mol / 1079 g/mol) * 100% = 0.1855%, which rounds to 0.1868%.

The Mineral Leadhillite,which Is Essentially Pb4(SO4)(CO3)2(OH)2 (FW = 1079 G/mol),contains

The Mineral Leadhillite,which Is Essentially Pb₄(SO₄)(CO₃)₂(OH)₂ (FW = 1079 G/mol),contains