What percentage of the total atomic mass of lithium phosphide (Li₃P) is composed of phosphorus?

What is the percent composition of Benzene, C₆H₆?

If a compound sample contains 40g of calcium, 12g of carbon, and 48g of oxygen, what is the percent composition by mass of calcium?

A compound contains 24g of carbon, 4g of hydrogen, and 32g of oxygen. What is the percent composition by mass of hydrogen?

An empirical formula:

What is the empirical formula of the following molecular formula:  C₃H₆

What is the empirical formula if you have 88.80% copper and 11.20% oxygen?

You are given the following percentages: 40.05% S and 59.95% O. Find the empirical formula for these elements.

Determine the empirical formula of a compound containing 63.50 % silver, 8.25 % nitrogen, and the remainder oxygen.

What is the molecular formula if the empirical formula is CH₂O and the molecular molar mass is 180.18?

If the empirical formula of a compound is C2H4 and its molar mass is 56 g/mol, what is its molecular formula?

Given the following: 42.07% Na, 18.89% P, and 39.04% O, and a molecular mass of 492 g/mole, what is the molecular formula?

A compound contains 27.84% sodium, 19.30% phosphorus, and 52.86% oxygen by mass. If the molar mass of the compound is 284 g/mol, what is its molecular formula?

A compound is found to contain 14.31% sodium, 25.40% sulfur, and 60.29% oxygen by mass. If the molar mass of the compound is 238 g/mol, what is its molecular formula?

Si₂F₆

What is the molecular formula if the empirical formula is CH₂O and the molecular molar mass is 180.18?

What is the empirical formula of C₄H₆ ?

Which one is an empirical formula?

Which of these is NOT an empirical formula?

What is the empirical formula for the following molecular formula: C₆H₁₄