What is the internal energy of 3.00 mol of N2 gas at 25°C? To solve this 5
problem, use the equation: U diatomic gas
Remember that R = 8.31 J/(mol-K) and K = °C + 273.
= nRT
A.1560j
B.37,100j
C.623j
D.18,600j

What is the measure of how much matter is in an object and that can be measured using a balance? a. height b. volume c. weight d. mass

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.

Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.