1.) what coefficient values will balance the reaction shown? ch4 + o2 ? co2 + h2o
a.1,1,1,1
b.1,2,1,2
c.2,1,2,1
d.1,1,2,1

2.) which is a balanced equation for this reaction?
a. koh + h3po4? k3po4 + h2o
b.3koh + h3po4 ? k3po4 + 3h2o
c. koh + 2h3po4? k3po4 + 3h2o
d.3koh + 2h3po4? k3po4 + 3h2o

3.) which is a balanced equation for this reaction? a. nh3 + o2? no + h2o
b.4nh3 + o2? 2no + 3h2o
c.2nh3 + o2? 2no + 3h2o
d.4nh3 + 5o2? 4no + 6h2o

4.) which is a balanced equation for this reaction? a. b2br6 + 6hno3? 2b(no3)3 + 6hbr
b. b2br6 + 3hno3? b(no3)3 + 3hbr
c. b2br6 + 2hno3? 2b(no3)3 + 6hbr
d. b2br6 + 2hno3? 2b(no3)3 + 3hbr

5.) balance the equation by calculating the coefficients. p4 + o2? p2o5
a.1,5,2
b.1,1,2
c.1,5,1
d.1,2,3