Question

1)how many moles of oxygen are there in So2

2)how many moles of oxygen are there in 2 gm of So2

3)how many moles of oxygen are there in 1 mole of So2

Answer 1

Basic idea : One mole of SO2 contains two moles of Oxygen.
1) One mole SO2 - - > 2 miles Oxygen.

2)2g means 2/64=1/32 moles of SO2. So there are 1/16 moles of oxygen.

Answer 2

Answer:

1.5 moles

Explanation:

First, what is the mass of 3 moles of O2 = ?

molar mass of oxygen = 2 x 16 => 32 grams per mole.

So, 3 moles of O2 has a mass equal to 3 x 32 =>96 grams.

So, we now have to find how many moles of SO2 has a mass = 96 grams.

molar mass of SO2 = 32 + 2 x 16 => 64 grams per mole.

So, 96 grams of SO2 is 64/96 moles =>96/64 => 3/2 => 1.5 moles.

Hence, 1.5 moles of SO2 has the same mass as 3 moles of O2.