Question

How many moles of carbon are in a sample of 21.45 moles of heptane(C7H16)???????

Answer 1

Answer: The number of moles of carbon atom that the given amount of heptane is 150.15 moles

Explanation:

We are given:

Moles of heptane = 21.45 moles

The chemical formula for heptane is $C_7H_{16}$

1 mole of heptane contains 7 moles of carbon atom and 16 moles of hydrogen atom

So, 21.45 moles of heptane will contain $(7\times 21.45)=150.15moles$ of carbon atom

Hence, the number of moles of carbon atom that the given amount of heptane is 150.15 moles

Answer 2

The  moles  of carbon  that  are in the sample  of 21.45  moles of heptane(C₇H₁₆)  is 150.15   moles

  calculation

 moles  of carbon = moles  of  heptane  × number of C atom

 number of C atom  in heptane = 1 ×7  = 7 atoms

moles is therefore = 21.45 moles ×  7 =150.15  moles