Problems with equation???help plz.,.i need the answer right away?

Question

)write equations for the four types of chemical reaction??

a) Combination

b) Decomposition

c) Single replacement

d) double decomposition

2) which of the four types of reaction generally involved reduction and oxidation??which do not?

Answer 1

google

Answer 2

Do your own homework.

Answer 3

even if i remembered such sillyness...i wouldnt take the 30 minutes to do your homework. cant blame ya for tryin tho

Answer 4

A.) Combination (aka Synthesis) Mg + O2 > MgO (you're combining the two elements)

B.) Decomposition FeS > Fe + S (decomposition of a compound)

C.) Single-replacement Zn + HCl > ZnCl2 + H2 (replacing Hydrogen with Zinc)

D.) Double-Decomposition CaCl2 + Na2CO3 > CaCO3 + 2NaCl (you need to balance this one) (calcium carbonate is the precipate)

2.) single replacement is redox, also combination and decompostion. Double decompostion is not.

Answer 5

a)  element1 + element2 <=> the results

b) the results <=> element1 + element2

There's a little help.

Do your own homework; ask your teacher for help if you're having trouble.  Read your class book.

Answer 6

I think you meant combustion:

CH4 + 2 O2 => CO2 + 2 H2O

Decomposition:

N2O4 => 2 NO2

Single:

2Fe + 6HCl => 2FeCl3 + 3 H2

Double:

HCl + NaOH => NaCl + H2O

Double replacement generally involve REDOX, some single replacement do.  Combustion reactions and decomposition reactions generally do not.

Answer 7

umm 4?

Answer 8

umm 5?