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The total number of electrons present in...

The total number of electrons present in `18 mL` of water is ……

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A, B, C, D

The total numbe of electrons present in `18 mL` of water is `6.023 xx 10^(24)`.
Number of electron in one molecules of `H_(2) O` is `2 + 8 = 10`
Denisty = 1
`18 mL` means `18 g`
Moles `= (18)/(18) = 1`
Moles `= 6.023 xx 10^(23)`
Electrons `= 6.023 xx 10^(23) xx 10 = 6.023 xx 10^(24)`
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Knowledge Check

  • The total number of electrons present in 18 mL of water (density of water is 1 g mL^(-1) ) is

    A
    `6.02 xx 10^(23)`
    B
    `6.02 xx 10^(22)`
    C
    `6.02 xx 10^(24)`
    D
    `6.02 xx 10^(25)`
  • The total number of electrons present in 18ml of water ( density of water is 1g/ml)

    A
    `6.02xx10^(20)`
    B
    `6.02xx10^(23)`
    C
    `6.02xx10^(24)`
    D
    `6.02xx10^(26)`
  • Total number of electrons present in 18 mL of water (density of water is 1 g/mL) is

    A
    `6.02xx10^(23)`
    B
    `6.02xx10^(22)`
    C
    `6.02xx10^(24)`
    D
    `6.02xx10^(25)`
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