At temperatures above 0°c, solid ice undergoes a spontaneous change to liquid water according to the following equation:
H2O + heat = H2O(l)
the changes in H2O(s) involve
a) a release of heat and a decrease in entropy
b) a release of heat and an increase in entropy
c) an absorption of heat and an increase in entropy
d) an absorption of heat and a decrease in entropy
Answers: 1
Chemistry, 22.06.2019 16:00, hjgjlgkjg
Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy
Answers: 1
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