A) How much diesel fuel (gallons) is required to move a unit train (100 cars) with 125 tons of freight per car from Salt Lake City to Denver (517 mi)?   b)The density of diesel fuel is 6.9 lb/gallon, how much CO2 is emitted by the train?

The classroom temperature is 20 oC. The relative humidity is 60%. What is the total humidity (kg of H2O vapor) in the room if its volume is 200 m3? 1.038 kg of H2O 1 gallon of H2O 3.5 liter of H2O 2.076 kg of H2O Vapor

2. How many U.S. gallons are there in a cubic mile? The total proven oil reserves of the U.S. areroughly 30 ×10^9 bbl. How many cubic miles is this?

Question 7

11. If it takes 796 calories to melt a mass of ice into water at a temperature of zero degrees Celsius then what was the mass of the ice in grams?   a. 9.99   b. 3180

4. Wind chill describes the additional cooling that occurs when skin is exposed to wind. The equation is W(v)=-0.17v³+18.4v²-584v-239 for 0 ≤ v ≤ 45, where v is the wind speed in metres per second. The units for W are megajoules per square metres per hour. Determine the speed of the wind that gives a minimum wind-chill factor.

For a quantity of ideal gas, which of the following is constant? a. PTV b. P/TV c. PT/V d. PV/T

The recommended daily caloric intake is 2000 calories (8,400,000J). This is because this is the same value for how much the average body loses to heat and work in a typical day (your change in energy is zero because you take in the same amount of energy you lose).  A) If you lose a total of 8,400,000J (Qout+W=total lost), but consume 1200 calories of food (5,000,000J), what would your change in energy be? B) Assuming your change in energy is negative (hint-it should be), where does your body get the extra energy to maintain it's temperature?

1. A volume of helium is at a pressure of 120 kPa. The new volume is 48 L after the pressure drops to 90 kPa. What was the starting volume?

5. A piece of cloth is discovered in a burial pit in the southwestern United States. A tiny sample of the cloth is burned to CO, and the "C/1?C ratio is 0.250 times the ratio in today's atmosphere. How old is the cloth?