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3 years ago

Calculate the number of moles in 125g of Copper (II) Hydroxide. URGENT!

Chemistry

1 answer:

Murljashka [212]3 years ago

7 0

Answer:

1.28 mol Cu(OH)₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis

Explanation:

Step 1: Define

125 g Cu(OH)₂

Step 2: Identify Conversions

Molar Mass of Cu - 63.55 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of H - 1.01 g/mol

Molar Mass of Cu(OH)₂ - 63.55 + 2(16.00) + 2(1.01) = 97.57 g/mol

Step 3: Convert

$125 \ g \ Cu(OH)_2(\frac{1 \ mol \ Cu(OH)_2}{97.57 \ g \ Cu(OH)_2} )$ = 1.28113 mol Cu(OH)₂

Step 4: Check

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

1.28113 mol Cu(OH)₂ ≈ 1.28 mol Cu(OH)₂

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Answer:

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[A⁻] = 1.5195x10⁻³moles * (1L / 0.10mol) = 0.0152L =

<h3>15.2mL of the 0.10M sodium formate solution</h3>

[HA] = 4.805x10⁻⁴ moles * (1L / 0.10mol) = 0.0048L =

<h3>4.8mL of the 0.10M formic acid solution</h3>

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