A) \[6.023\times {{10}^{23}}g\]
B) \[1.008g\] and \[0.55mg\]
C) \[9.1\times {{10}^{-28}}kg\]
D) \[2gm\]
Correct Answer: B
Solution :
Mass of a proton \[=1.673\times {{10}^{-24}}g\] \ Mass of one mole of proton \[=9.1\times {{10}^{-24}}\times 6.02\times {{10}^{23}}\]\[=10.07\times {{10}^{-1}}=1.008\,g\] Mass of a electron \[=9.1\times {{10}^{-28}}g\] \ Mass of one mole of electron \[=9.1\times {{10}^{-28}}\times 6.02\times {{10}^{23}}\]\[=54.78\times {{10}^{-5}}g=0.55\,mg\].
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