If $3.01 \times 10^{20}$ molecules are removed from $98 \ mg$ of $H_2SO_4$,how many moles of $H_2SO_4$ are removed?

Which of the following has the maximum number of molecules?

The total number of protons in $10 \ g$ of calcium carbonate is $(N_0 = 6.023 \times 10^{23})$

If the market prices of table salt $(NaCl)$ and table sugar $(C_{12}H_{22}O_{11})$ are $Rs. 4$ per $kg$ and $Rs. 30$ per $kg$ respectively,then the market price of $1$ mole of each will be,respectively,..... $Rs$.

How many moles of water are present in $180 \ g$ of water?

Which of the following represents $180 \ g$ of water correctly?