Question

What are the products ?
MgO+H2O -->
KClO3 + O2 -->
CuSO4 + Fe -->
Ba(NO3)2 + K2CrO4 -->
Zn + Pb(NO3)2 -->
Cu + Pb(NO3)2 -->

Answer 1

are these reactions correcT?

Answer 2

I got it from our experiment.

Answer 3

metal oxide + water always results to hydroxide. Since MgO is a metal oxide,

MgO + H20 -> MG(OH)2

does that make sense?

Answer 4

that's supposed to be Mg(OH)2

Answer 5

how did you do that?

Answer 6

which one?

Answer 7

wait, I think I got it.
you said:
metal oxide + water always results to hydroxide
so you placed (OH)2 after Mg

is it always metal oxide + (OH)2?
I mean you will "always" just stick (OH)2 after the metal oxide if the reaction is metal oxide + water?

Answer 8

not always stick (OH)2

it has 2 because the charge of Mg is 2+. So by the "criss-cross" method you get (OH)2

make sense?

Answer 9

you just stick OH after the metal oxide then apply the necessary subscripts

Answer 10

okay...i need to go for a while

Answer 11

ok, thanks for the help :)

Answer 12

could you do another one from my question?
I'll just try to answer the others :)

Answer 13

let me send you some the element and you will choose the correct one cause i don't know chemistry

Answer 14

\[\text{Cu}\text{SO}_4 + \text{Fe} \rightarrow \text{Fe}\text{SO}_4+\text{Cu}\]

Answer 15

okay. im back

Answer 16

2Fe+3Cl2=2FeCl3 2Fe + 3Cl2 = 2FeCl3
2Fe+3Cl2=2FeCl3 2Fe + 3Cl2 = 2FeCl3
2Fe + 3Cl2 = 2FeCl3 2Fe + 3Cl2 = 2FeCl3
2Fe + 3Cl2 = 2FeCl3 2Fe + 3Cl2 = 2FeCl3
2Fe + 3Cl2 = 2FeCl3 2Fe + 3Cl2 = 2FeCl3
2KO2 + 2H2O = 4KOH + 3O2 4KO2 + 2H2O = 4KOH + 3O2
2KO2 + 2H2O = 4KOH + 3O2 4KO2 + 2H2O = 4KOH + 3O2
2Mg + O2 = 4MgO 2Mg + O2 = 2MgO
2NaCl + H2SO4 = Na2SO4 + 2HCl 2NaCl + H2SO4 = Na2SO4 + 2HCl
2Al + 6NaOH = 2Na3AlO3 +3H2 2Al + 6NaOH = 2Na3AlO3 + 3H2
2KMnO4 + FeSO4 + H2SO4 = 2MnS04 + K2SO4 + Fe2(SO4)3 + H2O 2KMnO4 + 62FeSO4 + 40H2SO4 = 2MnS04 + K2SO4 + 31Fe2(SO4)3 + 40H2O

Answer 17

lol wow

Answer 18

what is all that @abayomi12?

Answer 19

Cu + Pb(NO3)2 does not react. However *if* it does then it will just be a single displacement reaction

Cu + Pb(NO3)2 --> Cu (NO3)2 + Pb

Answer 20

i told you i don't know much about chemistry just trying to put that maybe he can choose the correct one i have alot here i can send them if you want

Answer 21

as for Zn + Pb(NO3)2 <--this is just single displacement reaction

Answer 22

Ba(NO3)2 + K2CrO4 <--this is double displacement reaction

Answer 23

@lgbasallote I think I already know how to get it.
I'll try to answer all of it. please check my answers :)

Answer 24

sure

Answer 25

tag me when you have the list

Answer 26

ok :)

Answer 27

I think "KClO3 + O2" should be KClO3 + MnO2 because it is stated that "place a mixture of KClO3 and MnO2 in a test tube." then I heated it

Answer 28

probably...i dont know much about your chemistry experiment lol

Answer 29

MgO+H2O --> Mg(OH)2
KClO3 + MnO2 -->
CuSO4 + Fe --> Cu + FeSO4
Ba(NO3)2 + K2CrO4 --> BaCrO4 + K2(NO3)2
Zn + Pb(NO3)2 --> Zn(NO3)2 + Pb
Cu + Pb(NO3)2 --> Cu(NO3)2 + Pb

Answer 30

@lgbasallote

Answer 31

yes. sounds right to me

Answer 32

btw...i forgot to mention...dont forget to balance your equations

Answer 33

ok thanks :)

Answer 34

welcome