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CHEM 1011 FINAL EXAM NEWEST ACTUAL / WITH
QUESTIONS AND VERIFIED ANSWERS .GRADED A+
After heating a hydrate compound under controlled conditions, the anhydrous salt weighs - ----Answers---less than the hydrate
The empty crucible and lid are heated gently for ___ minutes and strongly for ___ minutes - ----Answers---gently for 3, strongly for 5
Constant weight for the hydrate experiment occurs when 2 consecutive weight readings agree within ____ g - ---- Answers---0.003
The sample of the hydrate compound in the experiment should weigh approximately ___ g - ----Answers---1
T/F: The flame should be adjusted until it is yellow in a hydrate
experiment - ----Answers---false
T/F: the crucible and lid must cool to room temp before
weighing them in a hydrate experiment - ----Answers---true
T/F: You may touch the crucible and lid with your bare hands
after heating them - ----Answers---false
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T/F: The analytical balance is used for this experiment - ----
Answers---true
T/F: While heating, the crucible lid needs to be left on tightly in
a hydrate experiment - ----Answers---false
The general formula for a combination reaction is - ---- Answers---AB + B --> AB
The general formula for a decomposition reaction is - ---- Answers---AB ---> A +B
The general formula for a single replacement (substitution) reaction is - ----Answers---AB+ C --> CB +A
The general formula for a double replacement (metathesis) reaction is - ----Answers---AB+ CD ---> AD + CB
??The most active metal on the activity series is - ---- Answers---potassium (??)
The least active metal on the activity series is - ----Answers- --zinc
what type of reaction is 2H2O --> 2H2 + O2 - ----Answers--- decomposition
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