Question

Calculate: (i) The number of water molecules. (ii) The number of H and O atoms. (iii) The number of electrons, protons, and neutrons in 9g of water



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Answer 1

Hey mate here is ur answer

1) molecules in a drop of water = (6.022 x 1023 molecules/mole) x 0.002275 moles.

molecules in a drop of water = 1.67 x 1021 water molecules.

2) SEE ABOVE ATTACHMENT THAT'S UR 2ND ANSWER

NOTE:- That answer is too lont so i had written in page and attached

3) Molecular weight of water = 18 gm

Molecular weight of water = 18 gmGiven weight of water = 9 gm

Molecular weight of water = 18 gmGiven weight of water = 9 gmNumber of moles = given weight÷ molecular weight

Molecular weight of water = 18 gmGiven weight of water = 9 gmNumber of moles = given weight÷ molecular weight1 mole = 6.022 × 10²³

Molecular weight of water = 18 gmGiven weight of water = 9 gmNumber of moles = given weight÷ molecular weight1 mole = 6.022 × 10²³0.5 mole = 6.022× 10²³÷2

Molecular weight of water = 18 gmGiven weight of water = 9 gmNumber of moles = given weight÷ molecular weight1 mole = 6.022 × 10²³0.5 mole = 6.022× 10²³÷2= 3.011× 10²³

Hope it is helpful to you

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Answer 2

Answer:

hydrogen atom is 2 and oxygen is 1