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1) one meter is equivalent to 3.281 ft. A cube with an a edge of 2.15 ft has a volume of
A) 0.281
B) 0.813
c) 0.776
d) 0.110
e) 0.451
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- 9) A rectangular box is h = 5.5 inches in height, w = 30.5 cm wide, and L = 0.35 yards long. What is the volume of the box in cubic feet?One mole of Gold (Au) atom has a mass of 197 g. We know that the density of gold is 19.30 g/cm3 in room temperature. Using those numbers, answer the following questions: a) What is the mass of a single gold atom in kg? b) Assume that gold atoms sit in a perfect cubic crystal structure. Estimate the distance between two gold atoms in meters. c) If we have a gold cube of 6 cm on each side, how many atoms can we fit along the edge of each side of the cube? d) What would be the mass, in kilograms, of the gold cube we discussed in part (c) (measuring 6 cm on each side)?4) A can of paint that covers 20 m? costs $24.60. The walls of a room 13 ft x 18 ft are 8 ft high. What is the cost of paint for the walls?
- You have an 18-carat gold coin (an alloy of gold and copper). Its mass is 6 grams. Using the fact that the number of carats is equal to (24*mass of gold/total mass), calculate the volume of gold in the coin. (density of pure gold = 19300 kg/m3, density of copper = 8960 kg/m3.) a.) 1.68*10-7 m3 b) 2.33*10-7 m3 c) 4*10-7 m3. In the problem above, what is the density of the coin? a.) 14963 kg/m3 b) 12333 kg/m3 c) 19300 kg/m3Indicate to what decimal position readings should be recorded (nearest 0.1, 0.01, etc.)for measurements made with the following devices.a. A thermometer with a smallest scale marking of 1°Cb. A graduated cylinder with a smallest scale marking of 0.1 mLc. A volumetric device with a smallest scale marking of 10 mLd. A ruler with a smallest scale marking of 1 mm25 0 cm-tall fish tank has a length and width of 40 0 cm x 20 0 cm respectively If 1000 cm3 of water is placed in the tank how deep will the water be in the tank?
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