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lana66690 [7]
3 years ago
6

Plzzz help I need the answers

Chemistry
1 answer:
dimaraw [331]3 years ago
8 0
Point D is the answer
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Answer:

Percentage lithium by mass in Lithium carbonate sample = 19.0%

Explanation:

Atomic mass of lithium = 7.0 g; atomic mass of Chlorine = 35.5 g; atomic mass of carbon = 12.0 g; atomic mass of oxygen = 16.0 g

Molar mass of lithium chloride, LiCl = 7 + 35.5 = 42.5 g

Percentage by mass of lithium in LiCl = (7/42.5) * 100% = 16.4 % aproximately 16%

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Percentage by mass of lithium in Li₂CO₃ = (14/74) * 100% = 18.9 % approximately 19%

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Percentage lithium by mass in Lithium carbonate sample = 19.0%

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