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The number of molecules in 4.25 g of amm...

The number of molecules in 4.25 g of ammonia are approximately

A

`0.5 xx 10^23`

B

`1.5 xx 10^23`

C

`2.5 xx 10^23`

D

`3.5 xx 10^23`

Text Solution

Verified by Experts

The correct Answer is:
B
No. of molecules of `NH_3` in 17g ` = 6.02 xx 10^23`
No. of molecules of `NH_3` in 4.25g
` = (6.02 xx 10^23)/(17) xx 4.25 = 1.5 xx 10^23`
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Knowledge Check

  • The number of molecules is 4.25 g of ammonia is approximately

    A
    `1.0x 10^(23)`
    B
    `1.5x 10^(23)`
    C
    `2.0x 10^(23)`
    D
    `3.5x 10^(23)`

  • The number of O_3 molecules in 16 g of ozone is approximately.

    A
    `2 xx 10^23`
    B
    `3 xx 10^23`
    C
    `4 xx 10^23 `
    D
    `6 xx 10^23`

  • The largest number of molecules is in:

    A
    36 g of water
    B
    28 g of `CO_2`
    C
    46 g of `CH_3OH`
    D
    54 g of `N_2O_5`

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