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Ga (atomic mass 70 u) crystallizes in a ...

Ga (atomic mass 70 u) crystallizes in a hexagonal dose packed structure. The total number of voids in 0.581 g of Ga is __ `xx10^(23)`. (Round off to the Nearest Integer). [Given : `N_(A)=6.023 xx 10^(23)]`

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Knowledge Check

  • The total number of protons in 10 g of calcium carbonate is (N_(0) = 6.023 xx 10^(23)) :-

    A
    `1.5057 xx 10^(24)`
    B
    `2.0478 xx 10^(24)`
    C
    `3.0115 xx 10^(24)`
    D
    `4.0956 xx 10^(24)`

  • The number of atoms in 0.1 mol of a triatomic gas is (N_A = 6.02 xx 10^(23) mol^(-1) )

    A
    `6.026 xx 10^(22)`
    B
    `1.806 xx 10^(23)`
    C
    `3.600 xx 10^(23)`
    D
    `1.800 xx 10^(22)`

  • Molar mass of electron is nearly : (N_(A) = 6 xx 10^(23))

    A
    `9.1 xx 10^(-31)kg mol_(-1)`
    B
    `9.1 xx 10^(-31)gm mol^(-1)`
    C
    `54.6 xx 10^(-8)`gm `"mol"^(-1)`
    D
    `54.6 xx 10^(-8)kg "mol"^(-1)`

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    The number of atoms in 8 g of sodium is x xx 10^23 . The value of x is ____________. (Nearest integer ) [Given : N_A = 6.02 xx 10^23 mol^(-1) Atomic mass of Na = 23.0 u]

    KBr is doped with 10^(-5) mole percent of SrBr_(2) . The number of cationic vacancies in 1 g of KBr crystal is ________ 10^(14) . (Round off to the Nearest Integer). [Atomic Mass : K : 39.1 u, Br : 79.9 u N_(A)=6.023 xx 10^(23) ]

    The total number of protons in 10 g of calcium carbonate is (N_(0)=6.023xx10^(23))

    The total number of protons in 10g of calcium carbonate is (N_(0) = 6.023xx10^(23))

    The total number of protons in 10 gm of calcium carbonate is (N_0 = 6.023 xx 10^23)

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