What is the number of moles of NaHCO3in 250cm3 of its solution if the solution contains 8.4 g of NaHCO3 in 1 dm3 of the solution. [Na = 23, 0 = 16, C = 12, H = 1)
-
A.
1 -
B.
0.25 -
C.
0.05 -
D.
0.025 -
E.
0.01
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