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mezya [45]
2 years ago
7

How many miles are there if you have 70.5g of Nacl

Chemistry
1 answer:
GenaCL600 [577]2 years ago
4 0
70.5g x 1 mol / 58.5g = 1.2mol of nacl
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How many moles of oxygen are needed to react with 87 grams of aluminum
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Answer:

2.4 moles of oxygen are needed to react with 87 g of aluminium.

Explanation:

Chemical equation:

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Given data:

Mass of aluminium = 87 g

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Solution:

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Number of moles of aluminium= Mass/ molar mass

Number of moles of aluminium= 87 g/ 27 g/mol

Number of moles of aluminium= 3.2 mol

Now we will compare the moles of aluminium with oxygen.

                              Al         :         O₂

                               4          :         3

                               3.2       :         3/4×3.2 = 2.4 mol

2.4 moles of oxygen are needed to react with 87 g of aluminium.

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