Chemistry problem.,.plz help.,i need the answer ryt away,.,?

Question

1)what is the equation for the law of definite proportions???

2)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

1) The law of definite proportion states that: All samples of a pure compund, no matter where they come from, always contain the same elements in the same nonchanging ratio(s) by mass. Which means... balance your chemical equations.

2)

a) Combination

2Na + Cl2 -> 2NaCl

b) Decomposition

2NaCl -> 2Na + Cl2

c) Single replacement

F2 + 2NaCl -> Cl2 + 2NaF

d)Double decomposition

CaCl2 + 2AgNO3  -> Ca(NO3)2 + 2AgCl

3) Oxidation is the interaction between oxygen molecules and other substances to form an oxide while reduction is removing oxigen molecules. So generally, oxidation would occur in combination reactions and reduction would occur in Decomposition reactions. Oxidation and reduction would not happen in Single replacement and double decomposition reactions.