Asample of sodium bicarbonate is known to contain

Ответ:

ricardorendon100

12.01.2022

Answer : The mass percent of NaHCO_3 in the sample is, 65.7 %

Explanation :

As we are given that Na makes up 18.00% of the entire mass of the sample.

First we have to calculate the mass percent of Na in NaHCO_3 .

$\text{Mass percent of Na}=\frac{\text{Mass of Na}}{\text{Mass of }NaHCO_3}\times 100$

Mass of Na = 23 g

Mass of NaHCO_3 = 84 g

Putting values in above equation, we get:

$\text{Mass percent of Na}=\frac{23g}{84g}\times 100=27.4\%$

Now we have to calculate the mass percent of NaHCO_3 in the sample.

As, 27.4 % amount of Na present in 100 % NaHCO_3

So, 18 % amount of Na present in $\frac{18}{27.4}\times 100\%=65.7\%$ NaHCO_3

Therefore, the mass percent of NaHCO_3 in the sample is, 65.7 %

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