Question

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

Answer 1

It's simpler than most questions :)

Explanation:

1) B

2) B

3) D

4) A

5) A

Hope this will help :)