Chemistry, 10.07.2019 19:40 porkhappycom
Water enters a heat exchanger at 180 °f, 20 psia and leaves at 160 °f, 19.8 psia. air enters the heat exchanger at 60 °f, 15 psia and leaves at 100 °f, 14.7 psia. the mass flow rate of the water is 40 lbm/min.
a) determine the heat transfer rate, btu/min
b) determine the mass flow rate of air, lbm/min
Answers: 1
Chemistry, 22.06.2019 02:50, jordan5778
What is the overall order of reaction for rate = k[no]2[o2]
Answers: 3
Chemistry, 22.06.2019 13:50, amandamac7339
Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.
Answers: 1
Chemistry, 22.06.2019 20:00, 20calzoy
There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .
Answers: 3
Water enters a heat exchanger at 180 °f, 20 psia and leaves at 160 °f, 19.8 psia. air enters the hea...
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