Chemistry Conversions
CSUN 100 Lec. Homework # 3
- Convert 1298.5 g to kilograms.
- A) 1.2985 kg B) 12.985 kg C) 129.85 kg
- D) .12985 kg E).012985 kg AB) .0012985 kg
- Convert 2542 mL to liters.
- A) .02542 L B) .2542 L C) 2.542 L
- D) 25.42 L E) 254.2 L
- Convert 1.25 x 10-10 m to picometers.
- A) 125 pm B) 12.5 pm C) 1.25 pm
- D) .125 pm E) .0125 pm AB) .00125 pm
- Convert 45.3 inches to millimeters.
- A) 115 mm B) 11.5 mm C) 1150 mm
- D) 17.8 mm E) 1.78 mm AB) 178 mm
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- Convert 454 yards to meters.
- A) 415 m B) 41.5 m C) 4150 m
- D) 64.3 m E) 643 m AB) 6430 m
- On earth, a kilogram has a weight of 2.205 lbs. What mass in grams has a weight of
1 lb?
- A) 435.5 g B) 453.5 g C) 455.3 g
- D) 2205 g E) 220.5 g AB) 22.05 g
- A marathon runner looses 1.64 lbs of fat during a race. How many grams of fat has this runner lost?
- A) 744 g B) 74.4 g C) 7440 g
- D) 3620 g E) 362 g AB) 36.2 g
- 1.0 yd2 is how many square feet?
- A) 6.0 ft2 B) 9.0 ft2 C) 27.0 ft2
- D) 0 ft2 E) .33 ft2 AB) 27 ft2
- 1.00 ft2 is how many square inches?
- A) 12.0 in2 B) 144 in2 C) 24.0 in2
- D) 4 in2 E) 9.00 in2 AB) 12 in2
- 1.0 yd3 is how many cubic feet?
- A) 6.0 ft3 B) 9.0 ft3 C) 27.0 ft3
- D) 0 ft3 E) .33 ft3 AB) 27 ft3
- Exactly 1 ft3 is how many cubic inches?
- A) 12 in3 B) 144 in3 C) 24.0 in3
- D) 36 in3 E) 1728 in3 AB) 172.8 in3
- A gas can holds 5.00 gallons of gas. How many cubic centimeters is this?
- A) 18900 cm3 B) 21100 cm3 C) 18.9 cm3
- D) 211 cm3 E) 1890 cm3 AB) 2110 cm3
- A new penny has a mass of 2.52 g and a volume of .349 cm3. What is the density of the penny?
- A) 7.22 g/cm3 B) 2.87 g/cm3 C) .879 g/cm3
- D) .138 g/cm3 E) 2.78 g/cm3 AB) .987 g/cm3
- What is the mass of 2.60 L of white gas if its density is .790 g/cm3?
- A) 3.39 g B) 2.05 g C) 2050 g
- D) 304 g E) 3290 g AB) 3.29 g
- What is the volume of 5.00 kg of iron if iron’s density is 7.78 g/cm3?
- A) 12.88 cm3 B) 15600 cm3 C) 156 cm3
- D) 2.78 cm3 E) 38900 cm3 AB) 389 cm3
- AC) 643 cm3
- Determine the number of significant figures in the measurement:
0.20200 cm
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- Determine the number of significant figures in the measurement:
20500 g.
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- Determine the number of significant figures in the advertisement:
20500 kitties for sale.
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- Determine the number of significant figures in the requirement:
1050 characters per page
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- Determine the number of significant figures in the measurement:
205.00 milliliters
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- Determine the number of significant figures in the measurement:
2050 milliliters
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- Determine the number of significant figures in the measurement:
0.2050 milliliters
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- Determine the number of significant figures in the measurement:
.02050 milliliters
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- Determine the number of significant figures in the measurement:
0.02050 milliliters
- A) 3 B) 4 C) 5 D) 6 E) 2 AB) exact
- What is the proper scientific notation for the measurement .002130 L?
- A) 2.130 x 10-3 L B) 2.130 x 103 L C) 2.130 x 10-2 L
- D) 2.13 x 10-3 L E) 2.13 x 103 L AB) 2.13 x 10-2 L
- What is the proper scientific notation for the measurement 2130 L?
- A) 2.130 x 10-3 L B) 2.130 x 103 L C) 2.130 x 10-2 L
- D) 2.13 x 10-3 L E) 2.13 x 103 L AB) 2.13 x 10-2 L
- What is the proper scientific notation for the measurement 2130. L?
- A) 2.130 x 10-3 L B) 2.130 x 103 L C) 2.130 x 10-2 L
- D) 2.13 x 10-3 L E) 2.13 x 103 L AB) 2.13 x 10-2 L
Give the answer in the correct number of significant figures for the following calculations:
- 4.523 cm x 2.56 cm =
- A) 11.6 cm2 B) 11.58 cm2 C) 11.6 cm
- D) 11.58 cm
- 4.523 cm/2.56 cm =
- A) 1.77 cm B) 1.777 cm C) 1.77
- D) 1.777
- 4.520 cm x 2.50 cm =
- A) 11.3 cm B) 11.30 cm C) 11.3 cm2
- D) 11.30 cm2 E) 11 cm2 AB) 11 cm
- 4.520 cm/2.50 cm =
- A) 1.81 cm B) 1.808 cm C) 1.8
- D) 1.81 E) 1.81 AB) 1.808
- 4.523 cm – 2.56 cm
- A) 1.96 cm B) 1.963 cm C) 1.96
- D) 1.963 E) 1.96 cm2 AB) 1.963 cm2
- 4.520 cm – 2.50 cm =
- A) 2.02 cm B) 2.020 cm C) 2.02
- D) 2.020 E) 2.02 cm2 AB) 2.202 cm2
- How many centiliters are in 3.25 kiloliters?
- A) 3.25 x 107 cL B) 3.25 x 103 cL C) 3.25 x 104 cL
- D) 3.25 x 106 cL E) 3.25 x 105 cL AB) 3.25 x 108 cL
- How many kiloliters are 32500. centiliters?
- A) 3.25 x 101 kL B) 3.25 x kL C) 3.25 x 10-1 kL
- D) 3.25 x 10-2 kL E) 3.25 x 10-4 kL AB) 3.25 x 102 kL
- How many meters are 4500. mm?
- A) 4.500 m B) 4.50 m C) 45.00 m
- D) 45.0 m E) .4500 m AB) .450 m
- How many millimeters are 58.50 meters?
- A) 5.85 x 104 mm B) 5.850 x 104 mm C) 5.850 x 103 mm
- D) 5.85 x 103 mm E) 5.85 x 105 mm AB) 5.85 x 105 mm
- How many meters are 585.0 millimeters?
- A) .5850 m B) .585 m C) 5.850 m
- D) 5.85 m E) .05850 m AB) .0585 m
1 ounce = 28.3495231 grams.
- How many ounces are 54.60 grams?
- A) 1.926 oz B) 1.93 oz C) 1550 oz
- D) 1548 oz E) .519 oz AB) .5192 oz
- How many grams are 54.60 ounces?
- A) 1548 g B) 1540 g C) 1.926 g
- D) 1.93 g E) .519 g AB) .5192 g
Density of quartz = 2.66 g/cm3
- What is the mass of 45.0 cm3 of quartz?
- A) 120 g B) 120. g C) 16.9 g
- D) .0591 g E) 47.66 g AB) 17.0 g
- What is the volume of 45.0 g of quartz?
- A) 120 cm3 B) 120. cm3 C) 16.9 cm3
- D) .0591 cm3 E) 16.92 cm3 AB) 17.0 cm3
- What is the mass of 45.0 L of quartz?
- A) 1.2 x 105 g B) 1.20 x 105 g C) 1.69 x 104 g
- D) 59,100 g E) 1.692 x 1054 g AB) 1.70 x 104 g
- What is the volume of 45.0 kg of quartz?
- A) 1.2 x 105 cm3 B) 1.20 x 105 cm3 C) 1.69 x 104 cm3
- D) 59,100 cm3 E) 1.692 x 104 cm3 AB) 1.70 x 104 cm3
- 45.00 g of an unknown solid has a volume of 5.60 cm3. What is the numerical value for the density of this material?
- A) 252 B) .124 C) 252.0
- D) .1244 E) 8.03 AB) 8.034
- What are the units for the density of the material in question 45.
- A) g B) cm3 C) g/cm3
- D) cm3/g E) gcm3 AB) 1/ g·cm3
- 54.50 kg of an unknown solid has a volume of 4.30 L. What is the density of this material?
- A) 12.67 g/cm3 B) 12.7 g/cm3 C) 78.9 g/cm3
- D) 2.34 g/cm3 E) 234 g/cm3 AB) 58.8 g/cm3
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Category: Sample Questions