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How many times an atom of calcium is hea...

How many times an atom of calcium is heavier than an atom of carbon ? (C = 12, Ca = 40)

Text Solution

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An atom of calcium is `(40)/(12)i.e.(10)/(3)` times heavier than an atom of carbon.
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Knowledge Check

  • Assertion : Atomic mass of calcium is 40 u Reason : An atom of calcium is 40 times heavier than an atom of carbon with mass 12 u.

    A
    If both assertion and reason are correct and reason is correct explanation for assertion
    B
    If both assertion and reason are correct but reason is not correct explanation for assertion
    C
    If assertion is correct but reason is incorrect
    D
    If both assertion and reason are incorrect
  • Assertion. Atomic mass of sodium is 23 u. Reason. An atom of sodium is 23 times heavier than an atom of carbon-12 isotope.

    A
    If both assertion and reason are true, and reason is the true explanation of the assertion.
    B
    If both assertion and reason are true, but reason is not the true explanation of the assetion.
    C
    If assertion is true, but reason if false
    D
    If both assertion and reason are false.
  • How many atoms ar in one unit cell of calcium ?

    A
    `4`
    B
    `3`
    C
    `2`
    D
    `1`
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    It the atomic masses of C and S are 12 and 32 respectively, then atom of S is how many times heavier than an atom of carbon ?

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    How many g atoms and number of atoms are there n (a) 60 g carbon, (b) 22.4 g Cu , an (c ) 72.52 g lead. Given atomic masses of C, Cu and Pb are 12,63.6, and 207.2, respectively. (Avogadro's number = 6.02 xx 10^(23)) .

    Assertion : Atomic mass of aluminium is 27. Reason : An atom of aluminium is 27 times heavier than 1/12th of the mass of carbon-12 atom.

    Assertion : Atomic mass of aluminium is 27. Reason : An atom of aluminium is 27 times heavier than 1/12th of the mass of carbon-12 atom.