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A 6.00 g sample of calcium sulfide is found to contain 3.33 g of calcium. what is the percent by mass of sulfur in the compound?

asked Feb 21, 2018

Chemistry
college

2 answers

1 vote

17.0k views

Why did urban areas develop subway, elevated train, and streetcar systems?

asked Dec 3, 2017

History
high-school

2 answers

1 vote

37.8k views

What is the relationship between the 3s in the number 9, 338

asked May 3, 2016

Mathematics
middle-school

1 answer

3 votes

119k views

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