Question

How many molecules of water and oxygen atoms are present in 0.9g of Water. this numerical is based on Mole Concept. Kindly solve it!!!

Answer 1

You might try reading what you post. The question, as is, doesn't make sense. I'm sure you meant to write, "How many molecules of hydrogen and oxygen atoms .....".
How many moles are in 0.9 g H2O. That will be moles = grams/molar mass.
Convert moles H2O to molecules remembering that there are 6.022 x 10^23 molecules in a mole.

Since there is 1 atom of oxygen per molecules, that will be the number of atoms of oxygen. The atoms of hydrogen will be twice that.

Answer 2

You need to solve for the right answer for this problem.

Answer 3

a) 18 g of water = 1 g-mol = 6.022x10^23 molecules of water
so, 0.9 g of H2O contain 3.011x10^22 molecules of water.

b) Since 1 molecule of water contain 1 atom of oxygen

So, 0.9 g of water contain 3.011x10^22 atoms of oxygen.

Answer 4

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Answer 5

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