Potassium chlorate decomposes to produce 20 g of solid potassium chloride. oxygen gas is also produced. which best describes the mass of oxygen?

a. it is more than the mass of potassium chloride.
b. it is less than the mass of potassium chlorate.
c. it equals the mass of potassium chlorate.
d. it equals the mass of potassium chloride.

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

4r-134a enters the condenser of a residential heat pump at 800 kpa and 50°c at a rate of 0.022 kg/s and leaves at 750 kpa subcooled by 3°c. the refrigerant enters the compressor at 200 kpa superheated by 4°c determine (a) the isentropic efficiency of the compressor, (b) the rate of heat supplied to the heated room, and (c) the cop of the heat pump. also, determine (d) the cop and rate of heat supplied to the heated room if this heat pump operated on the ideal vapor-compression cycle between the pressure limits of 200 and 800 kpa. (0.757, 4.37 kw, 5.12, 6.18, 3.91 kw)

In which of the following is positive work done by a person on a suitcase