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dybincka [34]
3 years ago
12

How many moles of magnesium are needed to react with 16.0 g of O2?

Chemistry
1 answer:
Ulleksa [173]3 years ago
5 0

Answer:

1 mol of Mg

Explanation:

2Mg + O₂  → 2MgO

2 moles of magnesium react with 1 mol of oxygen, to produce 2 mol of magnesium oxide.

16 g / 32 g/m = 0.5 moles of O₂

If 1 mol of oxygen react with 2 mol of Mg

0.5 moles of O₂ will react with 1 mol of Mg. (0.5 ₓ2)

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Answer:

0.312 moles of H2O

Explanation:

no. of moles of ch4= mass ÷ molar mass

                               =2.5 ÷ 16.04

                               =0.156 moles of ch4

According to balanced chemical equation

CH4        :        H2O

1 mole     :        2 moles

0.156 moles :       x moles  

by cross multiplication

x=  (0.156x2) ÷ 1

 = 0.312 moles of H2O

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3 years ago
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In polymerization, the relatively small molecules are generally referred to as monomers while the larger molecules they produce are known as polymers.

Polymerization is given by the chemical formula;

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Hence, the type of chemical reaction this best model is polymerization because it involved repeating the same design (monomers) to form a long grapevine with a bunch of grapes (polymers).

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3 0
3 years ago
Read 2 more answers
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