Question

An Apple iPhone has a mass of 112 g. What is its weight in ounces? (Given: 1 lb = 454 g; 1 lb = 16 oz)

Answer 1

3.95 oz

General Formulas and Concepts:

Chemistry - Stoichiometry

• Using Dimensional Analysis

Step-by-step explanation:

Step 1: Define

Apple iPhone = 112 g

Step 2: Identify Conversions

1 lb = 454 g

1 lb = 16 oz

Step 3: Convert

`112 \ g((1 \ lb)/(454 \ g) )((16 \ oz)/(1 \ lb) )` = 3.94714 oz

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

3.94714 oz ≈ 3.95 oz