Question

calculate the number of molecules in 1.6 gram of ch4​

Answer 1

Answer:

Gram-molecular mass of methane (CH4)=12+4=16g

Number of moles in 1.6g of methane =1.616=0.1

Number of molecules of methane in 0.1mole=0.1×6.02×1023

⇒6.02×1022

One molecules of methane has 6+4=10electrons

So,6.02×1023 molecules of methane have =10×6.02×1022electrons

⇒6.02×1023 electrons

Answer 2

Answer:

MW of methane=16g/mole

so, no. of moles of methane in 1.6g

= 1.6 =0.1

16g/mole

since,in 1 mole methane there are

6.022×10^23 molecules of methane,

so in 0.1 mole there will be 0.1×6.022×10^23 molecules of methane.

In one methane molecule there are 10 electron

total electron in 1 one mole or 1.6g=

10×0.1×6.022×10^23

= 6.022×10^23 is the right answer