Question

How many moles do you have in 17.23 grams of Cu(SO4)2​

Answer 1

0.06739 mol Cu(SO₄)₂

General Formulas and Concepts:

Chemistry - Atomic Structure

• Reading a Periodic Table
• Using Dimensional Analysis

Step-by-step explanation:

Step 1: Define

17.23 g Cu(SO₄)₂

Step 2: Identify Conversions

Molar Mass of Cu - 63.55 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of Cu(SO₄)₂ - 63.55 + 2(32.07) + 8(16.00) = 255.69 g/mol

Step 3: Convert

`17.23 \ g \ Cu(SO_4)_2((1 \ mol \ Cu(SO_4)_2)/(255.69 \ g \ Cu(SO_4)_2) )` = 0.067386 mol Cu(SO₄)₂

Step 4: Check

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

0.067386 mol Cu(SO₄)₂ ≈ 0.06739 mol Cu(SO₄)₂