3. Chemical Reactions

What is the empirical formula for a compound that is 36.1% Ca and 63.9% Cl by mass?

Which of the following best describes a formula unit in chemistry?

$S_1{O}_3$ is an empirical formula for which of the following molecular formulas?

Which of the following is the empirical formula of C_3H_6?

Which of the following is the empirical formula for propene (C3H6)?

Which of the following molecular formulas is also an empirical formula?

Which of the following formulas represents an empirical formula?

How many atoms of calcium, phosphorus, and oxygen are present in one formula unit of Ca3(PO4)2?

Given the compound 4Na3PO4, how many atoms of sodium (Na), phosphorus (P), and oxygen (O) are present in total?

Given a sample containing 3.72 g of phosphorus (P) and 21.28 g of chlorine (Cl), what is the empirical formula of the compound formed?

Which of the following is the empirical formula for magnesium oxide?

Which of the following is the empirical formula for a compound that is 36.86% nitrogen (N) and 63.14% oxygen (O) by mass?

How many total atoms are present in one formula unit of cobalt hydroxide, Co(OH)_2?

How many oxygen atoms are present in the empirical formula unit of magnesium chlorate?

Which of the following compounds has the same empirical formula as its molecular formula?