A 10 mg effervescent tablet containing sodium bicarbonate and oxalic acid release 0.25 ml of `CO_2` at T=298.15 K and p=1 bar. If molar volume of `CO_2` is 25.0L under such condition, the number of mole of sodium bicarbonate in each tablet is `10^(-x)` . What is numerical value of x. [Molar mass of `NaHCO_3 =84 g mol^(-1)` ]
A
0.84
B
33.6
C
16.8
D
8.4
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