Chemistry, 23.08.2019 17:10 destinyshanece08
Water (c= 4180 j/kg. °c) is to be heated by solar heated hot air (cp = 1010 j/kg•°c) in a double-pipe counterflow heat exchanger. air enters the heat exchanger at 90°c at a rate of 0.3 kg/s, while water enters at 22°c at a rate of 0.1 kg/s. the overall heat transfer coefficient based on the inner side of the tube is given to be 80 w/m.°c. the length of the tube is 12 m and the internal diameter of the tube is 1.2 cm. determine the outlet temperatures of the water and the air.( 27.3°c, 82.7°c)
Answers: 2
Chemistry, 21.06.2019 17:00
Two friends at different locations want to communicate with each other by sending low energy signals. which of the following methods can they use to communicate? a) produce x-rays using colliding electrons and send them to radios, which capture sound b) send messages using infrared radiation, which travel in the form of waves c) send radio waves through intervening media like radio and television d) produce sound waves using microwaves from heated objects
Answers: 2
Chemistry, 21.06.2019 18:50
Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml
Answers: 1
Chemistry, 22.06.2019 11:30
Compare and contrast refraction of light and sound will give brainliest
Answers: 1
Chemistry, 22.06.2019 18:00
An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³
Answers: 2
Water (c= 4180 j/kg. °c) is to be heated by solar heated hot air (cp = 1010 j/kg•°c) in a double-pip...
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