Question

if you have 4 mol of o2, how many grams of o2 do you have

Answer 1

Answer:

100 g O₂

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

Stoichiometry

• Using Dimensional Analysis

Explanation:

Step 1: Define

4 mol O₂

Step 2: Identify Conversions

Molar Mass of O - 16.00 g/mol

Molar Mass of O₂ - 2(16.00) = 32.00 g/mol

Step 3: Convert

1. Set up:                     $\displaystyle 4 \ mol \ O_2(\frac{32.00 \ g \ O_2}{1 \ mol \ O_2})$
2. Multiply:                   $\displaystyle 128 \ g \ O_2$

Step 4: Check

Follow sig fig rules and round. We are given 1 sig fig.

128 g O₂ ≈ 100 g O₂