Chemistry, 04.06.2021 19:00 punani

1. Write the equation and balance the following reaction: The decomposition of lithium chloride. 2. Write the equation and balance the following reaction: The single replacement of sodium and magnesium chloride.

3. What type of reaction best describes this equation? H2SO4 + Ca(OH)2 --> CaSO4 + 2 H2O

4. Calculate the molar mass of lead II nitrate.

5. What is the % Composition for each element in the formula magnesium Carbonate?

6. How many grams of calcium are in 2.43 moles of calcium?

7. How many molecules are found in a 33.6 liter container filled with CO2? Assume STP.

8. A compound contains 40.0% Calcium, 12.0% Carbon, and 48.0% Oxygen. What is the empirical formula?

9. Using the following balanced reaction, how many moles of carbon dioxide are produced if 4.90 moles of C2H6 is used? 2C2H6 + 7O2 --> 4CO2 + 6H2O

10. Using the following balanced reaction, how many grams of magnesium chloride is produced if 35.3 g of HCl is used? Mg + 2HCl --> MgCl2 + H2

11. Using the following balanced reaction, if 4.25 moles of Al react with 7.25 moles of HBr, what is the mass amount in grams of Hydrogen gas produced? (hint: this is a limiting reactant problem). 2Al + 6HBr --> 2AlBr3 + 3H2

12. What is the percent yield of a lab that produced 18.5 g of Nitrogen gas but based on the math, 33.0 g of Nitrogen was expected?

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