A) the definition of mass in units of grams
B) the mass of one mole of carbon
C) the ratio of chemical species to each other in a balanced equation
D) the ratio of elements to each other in a compound
Correct Answer: B
Solution :
If avogadro number\[{{N}_{A}}\], is changed from \[6.022\times {{10}^{23}}mo{{l}^{-1}}\]to\[6.022\times {{10}^{20}}mo{{l}^{-1}}\], this would change the mass of one mole of carbon. \[\because \] 1 mole of carbon has mass = 12 g or \[6.022\times {{10}^{23}}\] atoms of carbon have mass = 12 g \[\therefore \,\,\,6.022\times {{10}^{20}}\] atoms of carbon have mass \[=\frac{12}{6.022\times {{10}^{23}}}\times 6.022\times {{10}^{20}}\] \[=0.012g\]
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