Select true or false from the pull down menus for the following statements.
during fusion (melting), no heat has to be added to make the phase change under constant pressure.
a zero slope in the heating and cooling curve indicates that a phase change is taking place.
heat is the same as temperature. temperature is a measure of average kinetic energy.
the amount of heat absorbed during melting is equal to the amount of heat released during freezing.
a coin dealer, offered a rare silver coin, suspected that it might be a counterfeit nickel copy. the dealer heated the coin, which weighed 15.5 g to 100°c in boiling water and then dropped the hot coin into 27.0 g of water at t = 15.5°c in an insulated coffee-cup, and measured the rise in temperature. if the coin was really made of silver, what would the final temperature of the water be (in °c)? (for nickel, s = 0.445 j/g°c; for silver, s = 0.233 j/g°c )
Answers: 3
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Quiz1. which physical state of nitrogen has the highest entropy? a solid© b gasoc liquid
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What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?
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What is the common name for the compound shown here? enter the common name of the compound shown?
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Select true or false from the pull down menus for the following statements.
during fusio...
during fusio...
English, 20.02.2020 20:33
History, 20.02.2020 20:33