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10 Questions on Fundamentals of Chemistry - Assignment | CHEM 1075, Assignments of Chemistry

NorthWest Arkansas Community CollegeChemistry
Prof. Beverly A. Kelley

Material Type: Assignment; Professor: Kelley; Class: Fundamentals of Chemistry; Subject: SCIENCE/Chemistry; University: NorthWest Arkansas Community College; Term: Spring 2005;

Typology: Assignments

Pre 2010

Uploaded on 08/18/2009

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Chem 1075 Take Home Problem Set #5 Name____________________________
1. How many moles of CS2 would contain 7.83 x 1020 molecules of carbon disulfide?
2. How many atoms of Ca would be in 2.75 moles of calcium?
3. What is the molar mass of magnesium acetate, Mg(C2H3O2)2?
4. How many formula units would be in 3.05g of magnesium acetate, Mg(C2H3O2)2 ?
5. What is the density of SO3(g) at STP?
6. If a gas had a density of 1.70 g/L at STP, what is its molar mass?
7. How many grams would be in 2.51 L of a gas at STP?
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Download 10 Questions on Fundamentals of Chemistry - Assignment | CHEM 1075 and more Assignments Chemistry in PDF only on Docsity!

Chem 10751. How many moles of CS Take Home Problem Set #5 2 would contain 7.83 x 10 (^20) molecules of carbon disulfide?Name____________________________

  1. How many atoms of Ca would be in 2.75 moles of calcium?
  2. What is the molar mass of magnesium acetate, Mg(C 2 H 3 O 2 ) 2?
  3. How many formula units would be in 3.05g of magnesium acetate, Mg(C 2 H 3 O 2 ) 2?
  4. What is the density of SO 3 (g) at STP?
  5. If a gas had a density of 1.70 g/L at STP, what is its molar mass?
  6. How many grams would be in 2.51 L of a gas at STP? PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com
  1. Determine the % Composition for carbon disulfide, CS 2.
  2. If a compound is composed of 43.64% P and 57.37%O, what is its empirical formula? If the compoundhas a molar mass of 284 g/mole, what is its molecular formula?
  3. If a reaction yields 5.92g of product in the laboratory and the theoretical yield is calculated to be 6.79g,what is the % Yield for the reaction?

PDF created with FinePrint pdfFactory trial version http://www.pdffactory.com