Ch.4

Question 1

In order for something to have a combustion reaction, it must combine with _____?

Answer 1

O2(g)

Question 2

To balance equations we change the ______ not the ______

Answer 2

We change the coefficients, not the subscripts.

Question 3

The numbers of ______ must be the same on both sides to balance equations.

Answer 3

Oxygen.

Question 4

What does DOG stand for in mole conversions?

Answer 4

Desired moles over given moles

Question 5

DOG fomula/Mole to mole ratio

Answer 5

Given moles (if value) x desired moles/given moles = desired moles

Question 6

excess reactant and limited reactant can be found by

Answer 6

mole to mole ratio = yield

Question 7

The lower theoretical yield is found using the ________ reactant and is the _________ yield

Answer 7

limited reactant and is the actual theoretical yield.

Question 8

to fiend percentage yield. Divide ________ by _________

Answer 8

Divide balance moles (per chemical) by the given reactant value (for that chemical)

Question 9

Percentage yield

Answer 9

Actual yield/theoretical yield x 100%

Question 10

Dilution concentration formula

Answer 10

M1V1/m2=V2