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EleoNora [17]
2 years ago
9

How many moles are in 4.5 g of Sodium Chloride, NaCl?

Chemistry
1 answer:
Sergeu [11.5K]2 years ago
6 0

Answer:

The answer to the question is 0.07 moles

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How many moles of copper are needed to react with sulfur to produce 0.25 moles Ol
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Answer:

                       0.50 moles of Cu

Explanation:

                    The balanced chemical equation for given synthetic reaction is,

                                          2 Cu + S → Cu₂S

According to balance chemical equation,

                  1 mole of Cu₂S is produced by  =  2 moles of Cu

So,

          0.25 moles of Cu₂S will be produced by  =  X moles of Cu

Solving for X,

                      X  =  0.25 mol × 2 mol /  1 mol

                      X  =  0.50 moles of Cu

Hence, as the molar ratio of Cu to Cu₂S is 2:1 hence, to produce 0.25 moles of Cu₂S we will need 0.50 moles of Cu.

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