Calculate the mass of 3.5 moles of H2O

63 g H₂O

General Formulas and Concepts:

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Chemistry

Atomic Structure

Reading a Periodic Table

Stoichiometry

Using Dimensional AnalysisExplanation:

Step 1: Define

3.5 mol H₂O

Step 2: Identify Conversions

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

Step 3: Convert

Set up:                               Divide/Multiply:                

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

63.07 g H₂O ≈ 63 g H₂O

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Yes, endothermic means it turns cold. and some chemical changes include change of tempature.