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jek_recluse [69]
2 years ago
8

1. 4Na + 02 → 2Na20 find the reaction

Chemistry
1 answer:
Vadim26 [7]2 years ago
6 0

oxidation reaction

Explanation:

2 Na2O → 4 Na + O2

This is an oxidation-reduction (redox) reaction:

4 NaI + 4 e- → 4 Na0(reduction)

2 O-II - 4 e- → 2 O0(oxidation)

Na2O is an oxidizing agent, Na2O is a reducing agent.

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How many atoms are there in 5.00 mol of sulphur (S)?
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Answer:

3.01 × 10²⁴ atoms S

General Formulas and Concepts:

<u>Chemistry - Atomic Structure</u>

  • Using Dimensional Analysis
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Explanation:

<u>Step 1: Define</u>

5.00 mol S

<u>Step 2: Identify Conversions</u>

Avogadro's Number

<u>Step 3: Convert</u>

<u />5.00 \ mol \ S(\frac{6.022 \cdot 10^{23} \ atoms \ S}{1 \ mol \ S} ) = 3.011 × 10²⁴ atoms S

<u />

<u>Step 4: Check</u>

<em>We are given 3 sig figs. Follow sig fig rules and round.</em>

3.011 × 10²⁴ atoms S ≈ 3.01 × 10²⁴ atoms S

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