Question

Find the moles present in 32 GM's in oxygen​

Answer 1

Hi,

Here is your answer

Given:

Mass(m)=32gm

To Find:

Number of moles(n)

Solution:

The equation for finding number of moles of oxygen is given by

Number of moles of oxygen=Given mass/Molar mass of oxygen

Molar mass of oxygen=16

Substitute the given datas in the above equation

We get,

Number of moles=32/16

Number of moles of oxygen=2 moles

Notes:

1. The formula for finding number of moles of any substance

Number of moles=Given mass/Molar mass of the substance

2. One mole of any substance contains 6.022×10²³atoms of that element.

Hope this helps you.

Answer 2

Mw of o = 16
n= 32/16=2