Apump contains 0.5 l of air at 203kpa. you draw back on the piston of the pump until the pressure reads 25.4kpa. what is the volume of air in the pump?

a. 0.2l
b. 1.0l
c. 4.0l
d. 2.0l

= 4.0 L

Boyle's law states that the volume of a fixed mass of a gas is inversely proportional to pressure at a constant temperature.

Therefore; Volume α 1/pressure

Mathematically; V α 1/P

V = kP, where k is a constant;

P1V1 = P2V2

V1 = 0.5 l, P1 =203 kPa, P2 = 25.4 kPa

V2 = (0.5 × 203 )/25.4

    = 3.996

   ≈ 4.0 L

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.