The laboratory assistant in your school has accidentally mixed alcohol with water in a beaker. Unfortunately, the school science laboratory ran out of the alcohol stock, which is required for starch test in the leaf.
i. If you are asked to help the laboratory assistant in separating the mixture, which method will you use?
ii. Which component will be separated first? Why?โ
Answers: 2
Chemistry, 21.06.2019 20:10
Why is the vapor pressure of a warm lake higher than the vapor pressure of a cold lake? o a. warm water has a greater heat of vaporization. ob. warm water evaporates more quickly. cool water evaporates more quickly. od. cool water has a greater heat of vaporization.
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Chemistry, 22.06.2019 02:30
Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass
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Chemistry, 22.06.2019 04:00
Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ฮต, where =ฮตร1.010โ24 j. in other words, each no2 group could have ฮต of rotational kinetic energy, or 2ฮต, or 3ฮต, and so forth โ but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ฮต. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ฮต. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.
Answers: 2
Chemistry, 22.06.2019 09:00
An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2oโ2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10โ2 g lioh b) 1.17 x 10โ1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh
Answers: 1
The laboratory assistant in your school has accidentally mixed alcohol with water in a beaker. Unfor...
Computers and Technology, 14.11.2019 22:31
Computers and Technology, 14.11.2019 22:31