CHEM. 107 – GENERAL CHEMISTRY I

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- A metal cube measures 8.60cm on edge and has a density of 11.4g/cm
^{3}. What is its mass?

- A solid with a lower density will float on a liquid with a higher density. T or F

- If two substances have the same mass, the one with the greater volume will have the greater density. T or F

- The density of liquid A is 2.14g/mL and the density of liquid B is 1.46g/mL.When equal masses of these liquids are compared, liquid A will have the greater volume. T or F

- A volume of 300 mL is the same as a volume of 30.0cm
^{3}. T or F

- An experiment calls for 10.0 mL of bromine (d = 3.12 g/mL). Since an accurate balance is available, it is decided to measure the bromine by mass. How many grams should be measured out?

- Water is placed in a graduated cylinder and the volume is recorded as 43.5 mL. A homogeneous sample of metal pellets with a mass of 10.88 g is added and the volume of the water now reads 49.4 mL. What is the density of the metal in g/mL?

- How many m
^{3}are there in 100 cm^{3}?

- How many millimeters are there in 0.010 km?

- Which of the following is the smallest distance?
- 0 mm B) 1.0 nm C) 1.0 m D) 1.0 km E) 1.0 dm

- Which of the following is the largest volume?
- 1 milliliter B) 1 deciliter C) 1 liter D) 1 decaliter E) 1 kiloliter

- For the following measured numbers, the number of significant figures is indicated in parentheses. Which is correct?

A)2038 (three) B)40.04 (two)

- 0130 (three)
- 00142 (five)
- 4 × 10
^{2}(two)

- Which measurement is expressed using 3 significant figures?
- 0232 kg B) 34.20 cm C) 68.003 g D) 10,550 m E) 222.0 km

- The number of significant figures in 2.08 × 10
^{−4}cm is ________.- 1 B) 2 C) 3 D) 4 E) 5

- Express the following result to the proper number of significant figures.

- Perform the indicated operations and give the answer in cm with the proper number of significant figures.

12.64 cm − 48 mm + 0.246 m = ?

- What is the width of a 3.5 in. computer diskette in cm? (1 in. = 2.54 cm)

- What is the volume, in L, of a 64.0 fluid ounce bottle? (1 L = 1.06 qt) (1 qt = 32 fl. oz.)

- A 600. mL container has what volume in fluid ounces? (1 L = 1.06 qt) (1 qt = 32 fl. oz.)

- Convert 1.39 ft/s to meters per minute. (1 m = 39.37 in.)

- Convert 1.00 ft
^{3}to cubic centimeters. (1 in. = 2.54 cm)

- What would be the volume, in mL, of 1000 g of ethanol if the density of ethanol is 0.789 g/mL?

- An experiment calls for 22.6 g of bromine (d = 3.12 g/mL). What volume, in mL, should be used?

- Water is placed in a graduated cylinder and the volume is recorded as 43.5 mL. A homogeneous sample of metal pellets with a mass of 10.88 g is added and the volume of the water now reads 49.4 mL. What is the density of the metal in g/mL?

- The mass of a flask is 38.1346 g empty and 63.1769 g when filled with water. When the flask is filled with an unknown liquid, its mass is 75.5778 g. Determine the density of the unknown liquid, in g/mL. (d
_{H2O}= 1.000 g/mL)

- A recipe calls for 1.0 quart of water (d = 1.00 g / mL). What is the mass of water that is needed in grams? (1 L = 1.057 qt)

- A fish tank holds 40 gallons of water (d = 1.00 g/mL) when full. What is the mass of this water in kilograms? (1 ga = 4 qt; 1.057 qt = 1 L)

- Gasoline in the United States costs $1.749 per gallon. Elsewhere, the cost is typically reported in dollars per liter. What is the cost in dollars per liter? (1ga = 4 qt; 1.057qt =1 L)

- Which SI unit is most appropriate to measure the distance between Chicago and Detroit? A) Millimeter B) Centimeter C) Meter D) Kilometer

- Which SI unit is most appropriate to measure the thickness of a dime?
- A) Meter B) Millimeter C) Decimeter D) Kilometer

- What number is indicated by the SI prefix milli? A) 1/100 B) 1/1000 C) 100 D) 1000

- When expressed in proper scientific notation the number 4289 is

- When expressed in proper scientific notation the number 0.00364 is

- When expressed in proper scientific notation the number 0.000034 is

- Express the number 2.64 X 10
^{4 }in normal notation

- Express the number 3.00 X 10
^{2}in normal notation

- Multiply: (5.24 X 10
^{4}) (2.36 X 10^{-5}). When expressed properly the product is

- Divide: 3.724 X 10
^{-3}by 2.46 X 10^{4}. When expressed properly the quotient is

- Convert 184°F to degrees Celsius.

- The high temperature during a summer day was observed to be 92°F. What was this temperature in °C?

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