Question

1.6 g of methane contains _____ electrons
a.NA
b.2 NA
c.3NA
d.0.5NA
How to find it?? ​

Answer 1

Explanation:

Gram-molecular mass of methane =12+4=16g

Number of moles in 1.6g of methane = 1.6/16

=0.1

Number of molecules of methane in 0.1 mole=0.1×6.02×10 ²³

=6.02×10 ²²

One molecule of methane has 6+4=10 electrons

So,

6.02×10 ²³ molecules of methane have 10×6.02×10 ²²

=6.022×10 ²³ electrons

Answer 2

Answer:

c) 3 NA

Explanation:

hope it is a right ans