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The total number of protons in 10 g of c...

The total number of protons in 10 g of calcium carbonate is

A

`1.5057 xx 10^(24)`

B

`2.0478 xx 10^(24)`

C

`3.0115 xx 10^(24)`

D

`4.0956 xx 10^(24)`

Text Solution

Verified by Experts

The correct Answer is:
C
Number of protons in one molecule of `CaCO_3`
`= 20+6+8 xx 3 =50`
Number of protons in 10 g ` CaCO_3`
= number of molecules ` xx 50`
` = ( 10)/(100 ) xx 6.023 xx 10^(23) xx 50 = 3.0115 xx 10^(24)`
(Molecular weight of `CaCO_3 = 100`)
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Knowledge Check

  • The toal number of protons in 10g of calcium carbonate is

    A
    `3.015xx10^(24)`
    B
    `1.5057xx10^(24)`
    C
    `2.0479xx10^(24)`
    D
    `4.0956xx10^(24)`

  • The atomic mass of calcium (Ca) is 40 g. The number of moles in 60 g of calcium are

    A
    0.5 mol
    B
    2.0 mol
    C
    1.5 mol
    D
    0.75 mol

  • The total number of electrons in one molecular of carbon dioxide is

    A
    22
    B
    44
    C
    66
    D
    88

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    Name three forms of calcium carbonate .

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