What weight of sodium sulphate contains the same no.of atoms as there are present in 777g of calcium chloride?

Asked by nisha_vini29 | 17th Nov, 2017, 12:32: PM

Expert Answer:


No. space of space moles equals 777 over 111
space space space space space space space space space space space space space space space space space space space equals 7 space moles
1 space mole space of space substance space contains space 6.022 cross times 10 to the power of 23 space atoms
therefore 7 cross times space 6.022 cross times 10 to the power of 23 equals 4.2 cross times 10 to the power of 24
As space one space CaCl subscript 2 space unit space contains space 3 space atoms space per space molcule space comma
4.2 cross times 10 to the power of 24 cross times 3 equals 1.26 cross times 10 to the power of 25 space atoms

Answered by Varsha | 17th Nov, 2017, 02:48: PM