This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel refining): Ni(CO4)

A chemical engineer has determined by measurements that there are 9.6 moles of nickel in a sample of nickel tetracarbonyl. How many moles of carbon are in the sample?

9.6 moles

Explanation:

The compound; Ni(CO4)

The ratio of the elements is given as;

Ni : C : O

1   :  1  : 4

The ratio of Nickel is particularly;

Ni : C

1    :  1

If there are 9.6 moles of Nickel present in the sample, it means there are also 9.6 moles of Carbon in the sample.

Complete question:

This is the chemical formula for nickel tetracarbonyl (a powerfully poisonous liquid used in nickel refining): Ni(CO)4 A chemical engineer has determined by measurements that there are 9.6 moles of nickel in a sample of nickel tetracarbonyl. How many moles of carbon are in  the sample? Round your answer to 2 significant digits.

number of moles of carbon in the compound = 9.6 × 4 = 38.40 moles ≈ 38 moles

Explanation:

The molecular formula of the compound, tetracarbonyl is represented as  Ni(CO)4.  From the chemical formula of the actual compound contains 1 mole of nickel, 4 moles of carbon and 4 moles of oxygen.

The ratio of the moles can be represented as:

Ni      C      O

1     :   4   :   4

1 mole of Nickel containing  mass of 58.6934 g.

4 moles of carbon containing  mass of 4(12 g) = 48 g

4 moles of oxygen containing mass of 4(16 g) =   64 g

since 1 mole of nickel  contains 4 moles of carbon in the compound

         9.6 moles of nickel will contain ? moles of carbon

cross multiply

number of moles of carbon in the compound = 9.6 × 4 = 38.40 moles

2 significant figure = 38 moles

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