A smple of mixture of nacl caco3 and sio2 weighed 7.30, Ask an Expert

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Question 1: A smple of mixture of NaCl, Caco3 and SiO2 weighed 7.30 grams. During the water wash the sample lost 2.21 grams. After treatment with HCL, the sample weighed 2.05 grams.

a. What is the perecent of NaCL by mass in the sample?

b.What are the percentages of Caco3 and SiO2 by mass in the sample?

Question 2: A 11.553g sample of beach sand contained ,0275 g of black particles. If 45.0%(wt/wt%) of the black paricles were magnetite , what is the wt/wt% of magnetite in the beach sand?

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Category:- Chemistry
Reference No.:- M9476008

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