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frank fred
Questions (11)
(1) How many grams of copper, cu are there in 2.55 mol of cu? (2) Determine the percent composition of each of the following (a)
0 answers
692 views
define black body, emissivity, solar constant in relation to heat transfer.
0 answers
368 views
distinguish between Root mean square velocity, Most probable velocity, and Average velocity of gas molecules.
1 answer
546 views
the temperature of a body falls from 30C to 20C in 5 minutes. The air temperature is 13C. Find the temperature after a further 5
2 answers
909 views
the energy received by the earth from the sun is 1400w/m2. Assuming that the sun is a black body radiator and the ratio of the
0 answers
1,224 views
at what velocity must a conductor 75mm long cut a magnetic field of flux density 0.6T if an emf of 9V is to be induced in it?
3 answers
2,595 views
deremine (a) the work done and (b) the change in internal energy of 1.00 kg of water when it is all boiled to steam at 100c.
0 answers
637 views
deremine (a) the work done and (b) the change in internal energy of 1.00 kg of water when it is all boiled to steam at 100c.
1 answer
774 views
A volume of gas V at temperature T1 and pressure P is enclosed in a sphere. If is connected to another sphere of volume V/2 by a
0 answers
487 views
how many molecules of air are there in 1 litre flask at 293K, if the preessure in it is 0.3 atm.
1 answer
334 views
2 moles of an ideal gas at 20k changes from a pressure of 15 atm to 3 atm at constant temperature. Calculate the work done by
1 answer
998 views
Answers (1)
to solve for work done, cv=3/2R=3/2*8.317=12.4755, deltaU=cv*deltaT =12.4755*20=249.515, Q=W+deltaU, W=Q-deltaU, W=118J-249.515J=930.49J, the workdone is 930.49J, any question call me +2348065434920 for clearification
