Chemistry, 31.08.2019 17:00 loisfriedman117
Which transfer of energy occurs when ice cubes are placed in water that has a temperature of 45°c?
(1) chemical energy is transferred from the ice to the water.
(2) chemical energy is transferred from the water to the ice.
(3) thermal energy is transferred from the ice to the water.
(4) thermal energy is transferred from the water to the ice.
Answers: 1
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Chemistry, 21.06.2019 23:30
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Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?
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Chemistry, 22.06.2019 14:30
Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4.0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.
Answers: 3
Which transfer of energy occurs when ice cubes are placed in water that has a temperature of 45°c? <...
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