Question

calculate the number of molecule in 5g of steam​

Answer 1

Heat energy required for5gm of water at 0

∘

Cto get converted to water at 100

∘

C is latent heat required + heat required to change its temperature by 100

∘

=(80⋅5)+(5⋅1⋅100)=900calories.

Now,heat liberated by 5gm of steam at 100

∘

C to get converted to water at 100

∘

C is 5⋅537=2685 calories

So,heat energy is enough for 5gm of ice to get converted to 5gm of water at 100

∘

C

So,only 900 calories of heat energy will be liberated by steam,so amount of steam that will be converted to water at the same temperature is 900537=1.66g

So,the final temperature of the mixture will be 100

∘

C

Answer 2

Explanation:

steam=h2O.

molecular mass =1+1+16=18

molar mass =18gmol-1

no.of moles=mass of substance/molar mass

=5/18

=0.28mol

no.of molecules =no.of moles ×avagadros constant

=0.28×6.022×10raise to 23

=1.69×10raise to 23 molecules.

I HOPE IT WILL HELP U..

PLEASE MARK ME AS BRAIN LIST...