how many molecules are there in 9grams of water?
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Answered by
2
Water has 18 grams per mole so 9 grams is 0.5 moles of water. There are 6.022* 10^23 molecules in a mole. Each water molecule contains one oxygen and two hydrogens. 1 molecule of water contains 2 hydrogens, 1 Oxygen and it's molecular mass is 18g(2+16).
Answered by
3
Hey mate..
==========
We have to find out the no. of molecules in 9g of water:-'
▪Molecular mass of water (H2O)
= (1×2)+16
=18g/mole
▪Which means , 1 mole of water
= 18g of water contains 6.022×10^23 molecules of water
▪Then 9g of water will have:-
= (6.022×10^23/18) × 9
= 3.011×10^23 molecules
Hope it helps !!
==========
We have to find out the no. of molecules in 9g of water:-'
▪Molecular mass of water (H2O)
= (1×2)+16
=18g/mole
▪Which means , 1 mole of water
= 18g of water contains 6.022×10^23 molecules of water
▪Then 9g of water will have:-
= (6.022×10^23/18) × 9
= 3.011×10^23 molecules
Hope it helps !!
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