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Anuta_ua [19.1K]
2 years ago
12

32. List three examples of substances. Explain why each is a substance. (3.1)

Chemistry
1 answer:
Alex2 years ago
8 0

Answer: Chemical X H3 and f1

Explanation:

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AveGali [126]

Answer:

one mole of HgO will give one mole of Hg.

Explanation:

Given data:

Moles of HgO = 1 mol

Moles of Hg = ?

Solution:

Chemical equation:

2HgO → 2Hg + O₂

Now we will compare the moles of Hg with HgO from balance chemical equation.

                  HgO   :     Hg

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                     1       :      2/2×1 = 1 mol

So, one mole of HgO will give one mole of Hg.

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3 years ago
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2HCl + CaCO3 → CaCl2 + H2O + CO2
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