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e-lub [12.9K]
3 years ago
8

Help me please thank you

Chemistry
1 answer:
Damm [24]3 years ago
5 0
The atomic number is equal to proton number : 30
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C I’m pretty sure that is the answer
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Will the second method for determining volume (water displacement) work for ANY object or JUST an irregularly shaped one?
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1. Mendeleev organized elements in his periodic table in order of increasing ____________________.
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7 0
3 years ago
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How many moles of Fe are produced from 7 moles of Zn?<br> Zn(s) + FeSO4(aq) → ZnSO4(aq) + Fe(s)
guajiro [1.7K]

Answer:

7 mol Fe

General Formulas and Concepts:

<u>Chemistry</u>

  • Stoichiometry

Explanation:

<u>Step 1: Define</u>

RxN:     Zn (s) + FeSO₄ (aq) → ZnSO₄ (aq) + Fe (s)

Given:   7 moles Zn

<u>Step 2: Stoichiometry</u>

<u />7 \ mol \ Zn(\frac{1 \ mol \ Fe}{1 \ mol \ Zn} ) = 7 mol Fe

<u>Step 3: Check</u>

<em>We are given 1 sig fig.</em>

Since our final answer is in 1 sig fig, there is no need to round.

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