Question

number of moles in 128 gm of so2 will be

Answer 1

The molar mass of SO2 is 64.07 so divide 128/64.06, that gives 1.99 moles, that is the answer. 

Answer 2

Answer:

n = 2

Explanation:

It is given that,

Given mass, m = 128 gm

Let the molecular mass of $SO_2$ is M. Firstly, finding the molar mass of  $SO_2$ as:

The molar mass of Sulphur is 32 u and of oxygen is 16. So,

$M=32+16\times 2$

M = 64 u

Let there are n number of moles in 128 gram of $SO_2$. It can be calculated as :

$n=\dfrac{m}{M}$

$n=\dfrac{128}{64}$

n = 2

So, the number of moles in 128 gm of $SO_2$ is 2. Hence, this is the required solution.