Question

180g of water can be represented as 1)5g mole of water 2)10 moles of water
3)6.023x10^23 molecules of water 4)6.023x10^24 molecules of water a)1&2 only
b)2&4only
c)2&3only
d)all of these

Answer 1

Answer:

b) 2&4 only

Explanation:

mole=mass/molar mass

mole=180/ 18

=10 moles

so, no. of moles of water is 10 moles

No. of molecules = no. of moles ×Na

No. of molecules = 10 × 6.02×10²³

= 6.02 × 10²⁴

so., right option is B