Question

A 7.99 g sample of hcn is found to contain 0.296 g of h and 4.14 g of n.Find the mass of carbon in a sample of hcn with a mass of 3.40 g .

Answer 1

Mass of C in 3.40 g of HCN =1.51 gram.

Step-by-step explanation:

Mass of sample of HCN = 7.99 g

Mass of H in 7.99 g of HCN = 0.296 g

Mass of N in 7.99 g of HCN = 4.14 g

Mass of C in 7.99 g of HCN = (7.99-0.296-4.14) = 3.554 g

Now mass of HCN = 3.40 g

Mass of C in 3.40 g of HCN =
`(3.554)/(7.99) *3.40 =1.51 g`

So mass of C in 3.40 g of HCN =1.51 gram.