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What is the mass in grams of a chlorine ...

What is the mass in grams of a chlorine atom, Cl?

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The atomic weight of Cl is 35.5 amu, so the molar mass of Cl is 35.5 g/mol. Dividing 35.5 g ( per mol) by ` 6.023 xx 10^(23)` gives the amss of one atom.
Mass of a Cl atom`=(35.5g)/(6.023 xx 10^(23))`
` = 5.90 xx 10^(-23) g `
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Knowledge Check

  • The chlorine atom has

    A
    6 electrons with l = 0
    B
    6 electrons with l = 0
    C
    11 electron with l = 1
    D
    5 orbitals with m=0

  • The chlorine atom has

    A
    6 electrons with l = 0
    B
    11 electrons with l=1
    C
    5 orbitals with m = 0
    D
    2 orbitals with m + 1

  • 50 grams of calcium carbonate was completely burnt in air. What is the weight (in grams) of the residue? Atomic weights of Ca, C and O are 40,12 and 16 respectively)

    A
    2.8
    B
    28
    C
    22
    D
    4.4

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