A 4.82L balloon filled with gas is warmed from 243.1K to 300.1 K. What is the volume of the gas after it is heated?

5.95 L

Explanation:

V1/V2 = T1/T2

4.82 L/V2 = 243.1K/300.1K

V2 = 4.82*300.1/243.1 L = 5.95 L

answer: the enthalpy of the overall chemical reaction is +87.88 kj or +88 kj.

according to hess's law, the overall enthalpy of a reaction is the difference between the sum of enthalpy values of all the products and the sum of enthalpy values of all the reactants.

δh(reaction) = ∑nδh(products) - ∑nδh(reactants)

δh(reaction) = [δh +δh] - [δh]

δh(reaction) = [1(-287.02) + 1(0) ] - [1(-374.9)] kj = +87.88 kj

here, δh (pcl3) = -287.02 kj, δh(cl2) = 0, δh(pcl5) = -374.9 kj

therefore, enthalpy of the overall reaction is +87.88 kj or +88 kj.