C-06-Q046mediumsingle_mcqNumber of molecules in 10 g CaCO3\mathrm{CaCO_3}CaCO3—a6.02×10236.02 \times 10^{23}6.02×1023b6.02×10226.02 \times 10^{22}6.02×1022c6.02×10216.02 \times 10^{21}6.02×1021d2.58×10222.58 \times 10^{22}2.58×1022