Question

the number of H atom present in 90 g of is

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Answer 1

Explanation:

see the attachment

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Answer 2

Answer:

Given : 90g of waler

Atomic weght of H20

= 1 x 2+ 16 = 18 gms

: . No of moles = Mass / Atomic Weight

= 90 / 18

= 5

Aso we Know that,

1 mole = Avogadres no of moleules

= 6.022 x 10²³

No of H20 molecules in 5 moles

= 6.022 x 10²³ × 5

= 30.11 x 10²³

Explanation:

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