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4 years ago

2. Mercury (II) oxide decomposes into mercury and oxygen gas according to the following

Biology

1 answer:

bija089 [108]4 years ago

7 0

Answer:

7.8 moles are needed.

Explanation:

Given data:

Mass of oxygen produced = 125 g

Number of moles of mercury oxide needed = ?

Solution:

Chemical equation;

2HgO → 2Hg + O₂

Number of moles of oxygen:

Number of moles = mass/ molar mass

Number of moles = 125 g/ 32 g/mol

Number of moles = 3.9 mol

Now we will compare the moles of oxygen with mercury oxide.

O₂ : HgO

1 : 2

3.9 : 2×3.9 = 7.8 mol

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Describe what hormones are and what they do

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Oh and by the way the person below me copied and pasted her answer here's proof. I posted a screenshot of her answer.

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