SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is the percentage by mass of oxygen in a formula unit of sodium hydrogen carbonate (NaHCO3)?
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19.05%
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28.57%
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38.09%
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57.14%
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Explanation:
Detailed explanation-1: -The mass percent of oxygen in sodium bicarbonate (NaHCO3) is 57.13% Oxygen. The molecular formula of sodium bicarbonate is NaHCO3. 1) Determine the molar mass of each component (solute) of the mixture (solution): Na = 22.99 g/mol.
Detailed explanation-2: -What is the mass percent oxygen in sodium carbonate, Na2CO3 N a 2 C O 3 ? a. 54.7% .
Detailed explanation-3: -Note: The percent creation of NaOH, otherwise called sodium hydroxide, is 57.48 percent sodium, 40% oxygen, and 2.52 percent hydrogen.
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