Chemistry, asked by Tanya2809, 1 year ago

find the number of molecules in 90 g of water

Answers

Answered by Siddharth11111
1
the answer is:
23
1 mol = 6.022*10. molecules then , 1 mol os water =18 gm so, 90g= 18*5 so, multiply,
5*6.022*10 raise to 23
the ans. is 30.11*10raise to 23

Nil27: bro it is for atoms
Tanya2809: It is the wrong answer...sorry
Siddharth11111: bro the q is from my txbk
Siddharth11111: its our ls
Siddharth11111: firstly if u know the wrong ans . means correct from u r side then why do u ask the q
Answered by Nil27
1
mol= M/W
= 90/18
=5
90g of H2O contain 5 molecules

Siddharth11111: not 5 molecules
Siddharth11111: it has 5 moles
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