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17-02-2018
Chemistry

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What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 800 mL of H2O?

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17-02-2018

The percent by mass will be the amount of NaHCO3 divided by the total mass times 100.

20g/(400g + 20g) x 100 = 4.76%

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