1.

250 mL of a sodium carbonate solution contains 2.65 g of \[N{{a}_{2}}C{{O}_{3}}.\] If 10 mL of this solution is diluted to one litre, what is the concentration of the resultant solution? (mol. wt. of\[N{{a}_{2}}C{{O}_{3}}=106\])

A. 0.1 M
B. 0.01 M
C. 0.001 M
D. \[{{10}^{-4}}M\]
Answer» D. \[{{10}^{-4}}M\]


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