Question

question no42.. who will answer me first I'll make it as a brainlist answer...plzzzzz

Answer 1

1 mol of water=18 g

10 mol of water =180 g

So you bring 180 g of water.

No. of molecules in 1g water=1/18 * 6.023*10^23

= 0.33 ×10^23.

no. of molecules in 180 g water=180*0.33*10^23

=59.4 * 10^23 molecules

Answer 2

We will measure mass of water

Molar mass of water is 18

No.of moles=given mass/molar mass

Let given mass is X

10=X /18

X=18*10=180g

Second formula for finding moles

No.of moles=no.of particles/Avogadro's number

Let no.of molecules= Z

10=Z/6.022*10 raised to power 23

Z=6.022*10raised to power