A student analyzes a sample of rock that contains the element calcium (Ca). In the student's analysis, the calcium in the rock is precipitated as CaC,04 by the addition of Na,C,04. It is determined by the student that 182.2 mg of the rock produces 120.7 mg of CaC,04. What is the mass percent of calcium (Ca) in the rock sample? molar mass Ca = 40.078 g/mol molar mass CaC,04 = 128.097 g/mol molar mass Na, C,O4- 133.9985 g/mol
A student analyzes a sample of rock that contains the element calcium (Ca). In the student's analysis, the calcium in the rock is precipitated as CaC,04 by the addition of Na,C,04. It is determined by the student that 182.2 mg of the rock produces 120.7 mg of CaC,04. What is the mass percent of calcium (Ca) in the rock sample? molar mass Ca = 40.078 g/mol molar mass CaC,04 = 128.097 g/mol molar mass Na, C,O4- 133.9985 g/mol
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Transcribed Image Text:A student analyzes a sample of rock that contains the element calcium (Ca). In the student's analysis, the calcium in the rock is precipitated as CaC,04 by the addition of
Na,C204. It is determined by the student that 182.2 mg of the rock produces 120.7 mg of CaC,04. What is the mass percent of calcium (Ca) in the rock sample?
molar mass Ca = 40.078 g/mol
molar mass CaC204= 128.097 g/mol
molar mass Na2C204 = 133.9985 g/mol
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