Question

Determine the formula mass of H2O. Round your answer to 2 decimal places.​

Answer 1

18.02 g/mol

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

1. Brackets
2. Parenthesis
3. Exponents
4. Multiplication
5. Division
6. Addition
7. Subtraction

• Left to Right

Chemistry

Atomic Structure

• Reading a Periodic Table

Explanation:

Step 1: Define

Water H₂O

Step 2: Find Formulas Mass

Formula mass is molar mass.

Molar Mass of H - 1.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H₂O - 2(1.01) + 16.00 = 18.02 g/mol