An automobile gasoline tank holds 13.0 gal when full. How many pounds of gasoline will it hold, if the gasoline has a density of 0.56 g/mL?
A casting of an alloy in the form of a disk weighed 50.0 g. The disk was 0.250 inches thick and had a circular cross section of diameter 1.380 inches. What is the density of the alloy, in g/cm3?
3. What are the symbols for the following elements?
a. sulfur __________________
b. fluorine __________________
c. titanium __________________
d. potassium __________________
e. zinc __________________
4. What are the names of the elements with the following symbols?
a. Cr __________________
b. Na __________________
c. Cl __________________
d. Be __________________
e. He __________________
5. Write a chemical formula for each of the particulate-level drawings of the molecules below.
a.
b.
c.
d.
e.
6. Which of the following are elements? Which are compounds?
a. Mg __________________
b. CO2 __________________
c. NaCl __________________
d. Al __________________
e. Cl2 __________________
7. Classify the following as physical or chemical transformations:
a. eggs being fried ______________________
b. gasoline evaporating from an open can ______________________
c. charcoal briquettes turning into powder in a bag ______________________
d. the process in plants that converts carbon dioxide to sugar ______________________
e. water turning into ice ______________________
8. For the following items, determine whether it is a mixture or a pure substance.
a. an egg ______________________
b. sugar ______________________
c. table salt ______________________
d. butter ______________________
e. baking soda ______________________
9. Draw particulate-level pictures illustrating the difference between a solid, liquid, and a gas.
10. If 40.0 kJ of energy is absorbed by 500.0 g of water at 10.0 oC, then what is final temperature of the water?
11. When a 43.0 g sample of metal at 100.0 oC is added to 38.0 g of water at 23.72 oC, the final temperatures of both the metal and the water are 29.33 oC. The specific heat of water is 4.184 J/goC. What is the specific heat of the metal?
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