Question

how many molecules of water are there in 54 gram of water Avogadro's number is equal to 6.022 * 10 raise to 23 the molecular mass of water =18​

Answer 1

first calculate

no of moles = given wt/ gm.wt

= 54/18

no of molecules= no of moles* avagadro no

= 54/18* 6*10rasie to 23

( we can take nearwst value as 6)

= 54/18*6*10raise to 23

= 18* 10 raise to 23

HOPE THIS HELPS

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