Question

7. What is the mass in grams of 5.90 mol CgH1g? (l point)

0.0512 g
O19.4 g
389 g
O673 g

Answer 1

673 g

Step-by-step explanation:

Answer 2

m = 673 g

Step-by-step explanation:

We need to find the mass of 5.90 mol of
`C_8H_(18)`

Molar mass of
`C_8H_(18)` is:

`M=8* 12+1* 18\\\\=114\ g/mol`

Let m be the mass of 5.90 mol of
`C_8H_(18)`. Using mole concept to find it.

No of moles = mass/molar mass

`m=5.9* 114\\\\=672.6\ g\\\\\approx 673\ g`

So, the required mass is 673 g. Hence, the correct option is (d).