How many moles are in 17.13g of MgO

0.4250 mol MgO

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

17.13 g MgO

Step 2: Identify Conversions

Molar Mass of Mg - 24.31 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of MgO - 24.31 + 16.00 = 40.31 g/mol

Step 3: Convert

= 0.424957 mol MgO

Step 4: Check

We are given 4 sig figs. Follow sig fig rules and round.

0.424957 mol MgO ≈ 0.4250 mol MgO

the statement is true

the correct answer is 2 and 4