Answers evaluated for:
dave@brooks
Question 19
the hydrocarbon hexane is burned in excess oxygen
C
6
H
14
+ O
2
---> CO
2
+ H
2
O
Your answer: C
6
H
14
+ O
2
--> CO
2
+ H
2
O
Points Earned This Question: 3
The formulas you have entered for the reactants appear to be correct. The formulas you have entered for the products appear to be correct.
Question 22
dilute hydrochloric acid is added to a solution of diamminesilver(I) nitrate
Ag(NH
3
)
2
+
+ H
+
+ Cl
-
---> AgCl + NH
4
+
Your answer: Ag(NH
3
)
2
+
+ H
+
+ Cl
-
--> AgCl + NH
4
+
Points Earned This Question: 3
The formulas you have entered for the reactants appear to be correct. The formulas you have entered for the products appear to be correct.
Question 46
a sample of pure 2-butene is treated with hydrogen bromide gas
C
4
H
8
+ HBr ---> C
4
H
9
Br
Your answer: No responses sent.
Points Earned This Question: 0
You have not entered the formula(s) for any reactant(s). You have not entered the formula(s) for any product(s).
Question 53
a solution of sodium hydroxide is added to a solution of sodium dihydrogen phosphate until the same number of moles of each compound had been added
H
2
PO
4
-
+ OH
-
---> HPO
4
2-
+ H
2
O
Your answer: No responses sent.
Points Earned This Question: 0
You have not entered the formula(s) for any reactant(s). You have not entered the formula(s) for any product(s).
Question 55
liquid bromine is added to a solution of potassium iodide
Br
2
+ I
-
---> Br
-
+ I
2
In excess I
-
the I
2
forms I
3
-
.
Your answer: No responses sent.
Points Earned This Question: 0
You have not entered the formula(s) for any reactant(s). You have not entered the formula(s) for any product(s).
Question 56
an excess of ammonia gas is bubbled through a solution saturated with silver chloride
Ag
+
+ NH
3
---> Ag(NH
3
)
2
+
Your answer: No responses sent.
Points Earned This Question: 0
You have not entered the formula(s) for any reactant(s). You have not entered the formula(s) for any product(s).
Question 106
hydrogen gas is passed over hot iron(III) oxide.
Fe
2
O
3
+ H
2
---> Fe + H
2
O
Your answer: No responses sent.
Points Earned This Question: 0
You have not entered the formula(s) for any reactant(s). You have not entered the formula(s) for any product(s).
Question 149
samples of boron trichloride gas and ammonia gas are mixed
BCl
3
+ NH
3
---> NH
3
BCl
3
Your answer: No responses sent.
Points Earned This Question: 0
You have not entered the formula(s) for any reactant(s). You have not entered the formula(s) for any product(s).
Total Points Earned: 6/24 maximum. Remember, the first five answers are scored on the actual AP Chem test, and the maxium points = 15.
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