Questions from General Chemistry

Q: Perform each of the following conversions, being sure to set up

Perform each of the following conversions, being sure to set up the appropriate conversion factor in each case. a. 254.3 g to kilograms b. 2.75 kg to grams c. 2.75 kg to pounds d. 2.75 kg to ounce...

Q: For the masses and volumes indicated, calculate the density in grams

For the masses and volumes indicated, calculate the density in grams per cubic centimeter. a. mass = 452.1 g; volume = 292 cm3 b. mass = 0.14 lb; volume = 125 mL c. mass = 1.01 kg; volume = 1000 cm...

Q: List the names, symbols, and atomic numbers of the top

List the names, symbols, and atomic numbers of the top four elements in Groups 1, 2, 6, and 7.

Q: Which subatomic particles contribute most to the atom’s mass? Which subatomic

Which subatomic particles contribute most to the atom’s mass? Which subatomic particles determine the atom’s chemical properties?

Q: Read the “Chemistry in Focus” segment A Mystifying Problem,

Read the “Chemistry in Focus” segment A Mystifying Problem, and discuss how David and Susan analyzed the situation, arriving at the theory that the lead glaze on the pottery was responsible for their...

Q: Is it possible for the same two elements to form more than

Is it possible for the same two elements to form more than one compound? Is this consistent with Dalton’s atomic theory? Give an example.

Q: Iron has a density of 7.87 g/cm3.

Iron has a density of 7.87 g/cm3. If 52.4 g of iron is added to 75.0 mL of water in a graduated cylinder, to what volume reading will the water level in the cylinder rise?

Q: You want to make a rectangular box that weighs 2.0

You want to make a rectangular box that weighs 2.0 pounds and floats on water. The width and height of the box are each 5.0 cm long. Choose the minimum length of the box that will keep it afloat on th...

Q: The principal goal of alchemists was to convert cheaper, more common

The principal goal of alchemists was to convert cheaper, more common metals into gold. Considering that gold had no particular practical uses (for example, it was too soft to be used for weapons), why...

Q: Express each of the following as an “ordinary” decimal number

Express each of the following as an “ordinary” decimal number. a. 3.011 * 1023 e. 4.32002 * 10-4 b. 5.091 * 109 f. 3.001 * 10-2 c. 7.2 * 102 g. 2.9901 * 10-7 d. 1.234 * 105 h. 4.2 * 10-1