Question

molecular mass of water is 18u. What will be the ni. of molecules of water on 18g water

Answer 1

No of molecules = moles x avagadro number 

moles = given mass / molar mass = 18/18 = 1 mole

no of molecules = 1x6.022x$10^{23}$= 6.022x$10^{23}$

Answer 2

Answer:

No of molecules = moles x avagadro number

moles = given mass / molar mass = 18/18 = 1 mole

no of molecules = 1x6.022x 10^{23} = 6.022x 10^{23} No of molecules = moles x avagadro number

moles = given mass / molar mass = 18/18 = 1 mole

no of molecules = 1x6.022x 10^{23} = 6.022x 10^{23}