HW: Chem I review
1. Provide the formula for the following ionic compounds.
a. calcium sulfate
b. ammonium phosphate
c. lithium nitrite
d. zinc sulfide
2. Determine the number of molecules present in 3.50 mol of nitrogen dioxide and the number of atoms of oxygen. (show work)
3. Determine the oxidation state of:
a. Chlorine in HClO4 b. Manganese in MnO4–2
4. The molecular formula of morphine, a pain-killing narcotic, is C17H19NO3.
a. What is the molar mass?(show work)
5.Write balanced equations for the following reactions:
a. The decomposition of dinitrogen oxide gas to its elements.
b. The combustion of butane gas.
6. Write the net ionic equation for the following aqueous reactions:
a. Hydrochloric acid and sodium hydroxide to form sodium chloride and water.
b. Silver nitrate and potassium iodide.
7.How many grams of solute are present in 35.0 ml of 0.236 M sodium sulfate? ( show work)
a. What is the molarity of the sodium ions?
8. A piece of unknown metal with mass 30 g is heated to 110.0 °C and dropped into 100.0 g of water at 20.0 °C. The final temperature of the system is 25.0 °C. Determine the specific heat of the metal.
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