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3 years ago

Calculate the number of atoms in 0.25 moles of manganese?

Chemistry

1 answer:

White raven [17]3 years ago

3 0

<h3>Answer:</h3>

1.5 × 10²³ atoms Mn

<h3>General Formulas and Concepts:</h3>

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Atomic Structure

Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<h3>Explanation:</h3>

Step 1: Define

0.25 mol Mn

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Set up: $\displaystyle 0.25 \ mol \ Mn(\frac{6.022 \cdot 10^{23} \ atoms \ Mn}{1 \ mol \ Mn})$
Multiply: $\displaystyle 1.5055 \cdot 10^{23} \ atoms \ Mn$

Step 4: Check

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

1.5055 × 10²³ atoms Mn ≈ 1.5 × 10²³ atoms Mn

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Calculate the number of atoms in 0.25 moles of manganese￼?

Calculate the number of atoms in 0.25 moles of manganese?