Question

Calculate the no of molecules present in 156g of benzene C6H6

Answer 1

Answer:

No. of molecules = 2molecules

Explanation:

Molecular Weight of Benzene

=>6Carbon=72g & 6Hydrogen=6g

So, total molecular weight of Benzene=>78g

No. of molecules=Given weight

______________

Molecular Weight

So, no. of molecules = 156g/78g

No. of molecules=2

Answer 2

Answer:

2$N_{A}$

Explanation:

no. of moles = 156/78 = 2

1 mole has $N_{A}$ molecules

2 moles have 2 X $N_{A}$ molecules