Balancing Chemical Equations?

Question

1) H2 + O2 -------> 2H2O

2) Mg + O2 -------> MgO

3) Zn + HCL ------> ZnCL2 + H2

4) P + O2 -------> P4O10

5) Fe + CL2 ------> FeCL3


Thanks!

Answer 1

1) this one is already balanced for you!!

2)Count the number of Mg and O on the right side, and count the number of Mg and O on the right side. On the left, you have 2 O and 1 Mg, and on the right you have 1 Mg and 1 O. To make the oxygen on both sides equal, you need to double the MgO. Now on the left, you have 2 O and 1 Mg, and on the right, you have 2Mg and 2 O. Now you need to multiply the Mg by two so the Mg on both sides is equal. and you're done!!!!
2Mg + 02 --> 2MgO

3) On the left, you have 1 Zn, 1H, and 1 Cl. on the right you have 1 Zn, 2Cl and 2H. the Zn are balanced and you just need to multply the HCl on the left to balance the whole equ.
Zn + 2HCl --->ZnCl2 + H2

4) On the left, you have 1 P and 2O, and on the left you have 4 P and 10 O. If you multiply the P on the right by 4, and the O on the right by 10, you have 4P and 10 O on both sides
4P + 5O2 ---->P4O10

5) On the left, you have 1 Fe 2 Cl, and pn the left, you have 1 Fe and 3 Cl. The easiest way to balance this is multiply the Cl on the right by the amount of the left one and vice versa. when you do that, you have 1 Fe and 6Cl on the right, and you have 2Fe and 6Cl on the left. To finish the equation, multiply the Fe by two.
2Fe + 3Cl2---->2FeCl3

Voila! You have balanced 5 equations!

i hope this was helpful!

Answer 2

You need to make sure that the total number of any one atom on one side is equal to the number on the other side.

I'll do this one as an example, but I would ike to see how you do:-)

3) Zn + HCL ------> ZnCL2 + H2
Zn + 2HCl ------> ZnCl2 + H2

Let's start with the Hydrogen. There is one (H) on the left and 2 (H) on the right. So, If I put a 2 in front of the HCl, then my (H) are balanced out. But, then make sure that (Cl) is balanced out (which it is, 2 on each side). So, you're good to go.

Good luck with the rest!

Answer 3

You have to make sure that the number of atoms of each element are the same on each side of the --->

1. 2H2 + O2 -------> 2H2O
2. 2 Mg + O2 ---> 2MgO
3. Zn +2HCl --> ZnCl2 + H2
4. 4P + 5O2 ---> P4O10
5. 2Fe + 3 Cl2 ---> 2FeCl3

Answer 4

1) H2 + O2 -------> H2O2
2) 2Mg+ O2-------> 2MgO
3) Zn + 2HCl-----> ZnCl2 + H2
4) P4 + 3O2------> 2P2O3
5) 2Fe + 3Cl2-----> 2FeCl3


you are welcome, these are the corrected and balanced chemical formulae, i answer them to the best of my abilities, i am a science major in my school

Answer 5

1) 2H2+O2->2H2O
2) 2Mg+O2->2MgO
3) Zn+2HCl->ZnCl2+H2
4) 2P+5O2->P4O10
5) 2Fe+3Cl2->2FeCl3

Actually balancing chemical equation is simple but also very useful in chemistry. I assume that you are doing double-check for your homework, however, learn it!^^

Answer 6

H2 + Br2 = HBr & HBr you may make constructive that there is an same quantity of aspects on each and each and every aspect of the equation. so for this equation it makes 2 molecules of HBr because ther are 2 of each and every ingredient on the different aspect of the equation.

Answer 7

go to this website then click kidzone then chemistry matter,atoms& more there is a link to balancing chemical equations tutorials

Answer 8

1) 2H2 + O2 ----> 2H20
2) 2Mg + O2 ----> 2MgO
3) Zn + 2HCl -----> ZnCl2 + H2
4) 4P + 5O2 -----> P4O10
5) 2Fe + 3Cl2 -----> 2FeCl3

You're welcome!

Answer 9

1) 2,1,1
2) 2,1,2
3)1,2,1,1
4)4,5,1
5)2,3,2