Lab: Calorimetry and Specific Heat — Unit test Answers
25 verified answers
21
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The picture below shows a mixture that was stirred 3 minutes ago.What should this mixture be classified as?
A
colloidB
compoundC
solutionD
suspension22
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Which factor causes a decrease in the rate of dissolution?
A
decreasing the amount of soluteB
increasing the stirring of the solutionC
decreasing the surface area of the soluteD
increasing the temperature of the solvent23
Consider the reaction below.Which is the net ionic equation for the reaction?
A
Upper H superscript plus, plus upper C l superscript minus right arrow upper H upper C l.
B
Upper N a superscript plus, plus upper C l superscript minus right arrow upper N a upper C l.
C
Upper N a superscript plus, plus upper C subscript 2 upper H subscript 3 upper o subscript 2 superscript minus (a q) plus upper H superscript plus, right arrow upper N a upper C subscript 2 upper H subscript 3 upper O subscript 2.
D
Upper C subscript 2 upper h subscript 3 upper O subscript 2 superscript minus (a q) plus upper H superscript plus right arrow upper H upper C subscript 2 upper H subscript 3 upper O subscript 2.
25
What happens to water when it freezes?
A
Its mass increases.B
Its mass decreases.C
Its density increases.D
Its density decreases.Did you find these answers helpful?
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