Which of the following equations is balanced Questlon 9 6 po

Which of the following equations is balanced? Questlon 9 (6 points) Which of the following equations is balanced? 5P-402-2P4Og 4P-502-2P20- Save

Solution

9)

5 P + 4 O2 --> 2 P4O5

5 P atoms on the left and 8 P atoms on the right , so not balanced

2 P + O2 ---> P2O5

2 O atoms on the left and 5 O atoms on the right , so not balanced

4 P + 5 O2 --> 2 P2O5

this is balanced

so

the answer is

4 P + 5 O2 ---> 2 P2O5

7)

to demonstrate law of conservation of mass , equation should be balanced

the one that is not balanced does not demonstrate the law of conservation of mass

P4 + 5 O2 ---> 2 P4O10

8)

insert reaction coefficients before reactants and products