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4.0 g of caustic soda (NaOH) contains sa...

4.0 g of caustic soda (NaOH) contains same number of sodium ions as are present in :

A

5.3 g of `Na_2CO_3`

B

0.05 mole of `Na_2SO_4`

C

5.85 g of NaC l

D

0.1 mole of `NaNO_3`

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Calculate the mass of sodium which contains same number of atoms as are present in 4 g of calcium . Atomic masses of sodium and calcium are 23 and 40 respectively .

Calculate mass of sodium which contains same number of atoms as are present in 4 g of calcium (Atomic weight Na = 23 , atomic weight Ca = 40 )

Knowledge Check

  • 4.0 g of caustic soda (mol mass 40) contains same number of sodium ions as are present in-

    A
    10.6 g of `Na_(2)CO_(3)` (mol. Mass 106)
    B
    58.5 g of NaCl (Formula mass 58.5)
    C
    7.1g of `Na_(2)SO_(4)`
    (Formula mass 142)
    D
    1mol of `NaNO_(3)` (mol. Mass 85)

  • 4*0 g of caustic soda (Mol. Mass 40) contains same number of sodium ions as are present in

    A
    `10*6` g of `Na_(2)CO_(3)` (Mol. mass 106)
    B
    `58*5` g of `NaCl` (Formula mass `58*5`)
    C
    100 mL of `0*5MNa_(2) SO_(4)` (Formula mass = 142)
    D
    1 g-equivalent of `NaNO_(3)` (Mol. mass 85)

  • 40 g of caustic soda contain :

    A
    `6.02 xx 10^(23)` atoms of H
    B
    22.4 litres of `N_(2)`
    C
    `6.02 xx 10^(24)` molecules of `O_(2)`
    D
    4 g of Na

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