Nature of Energy

Chemical energy is a type of which of  the following energies? A. Exchange energy B. Thermal energy C. Potential energy D. Kinectic energy

A refrigerator uses 900 kWh of electrical energy per year. How many joules of electricity are used in two years?A. 3.24 x 109 JB. 6.48 x 109 JC. 2.50 x 10-4 JD. 5.00 x 10-4 J

Which of the following is true about methane in natural gas?A. The potential energy of methane is highest before methane combustionB. The potential energy of methane is highest after combustionC. The potential energy of methane is the same before and after combustion

A watt is a measure of power (the rate of energy change) equal to 1 J/s. (a) Calculate the number of joules in a kilowatthour.

The daily dietary energy requirement for an adult is 2.00 × 103 kcal (1 cal = 4.184 J). This is equivalent toa. 47.8 x 104 kJb. 8.37 x 103 kJ c. 8.37 x 103 Jd. 2.00 x 103 kJe. 478 kJ

A NASA spacecraft measures the rate R of at which atmospheric pressure on Mars decreases with altitude. The result at a certain altitude is: R = 0.0272 kPa•km-1 Convert R to kJ•m-4.

A chemistry grad student measures the performance Z of the new pump in his lab. The result is: Z = 7.1 kPa•mm3•s-1 Convert Z to mJ•s-1