What is the final pressure (in mm Hg) inside the car if the sun heats the car from 20 Celsius to 55 Celsius. The initial pressure was 760 mm Hg. Assume the volume of the car is 2600 Liters.

851 mmHg

Explanation:

Using pressure law equation as follows:

P1/T1= P2/T2

Where;

P1 = initial pressure (mmHg)

V2 = final pressure (mmHg)

P1 = initial temperature (K)

T2 = final temperature (K)

According to the information provided in this question,

P1 = 760mmHg

P2 = ?

T1 = 20°C = 20 + 273 = 293K

T2 = 55°C = 55 + 273 = 328K

Using P1/T1= P2/T2

760/293 = P2/328

Cross multiply

293 × P2 = 760 × 328

293P2 = 249280

P2 = 249280 ÷ 293

P2 = 850.78

Approximately, P2 = 851 mmHg.

answer: enthalpy

explanation:

for a exothermic reaction, the energy is released i.e. the energy of the products is lower than the energy of the reactants.

= enthaply

= energy of products

= energy of reactants

as , thus comes out to be negative. negative value of enthalpy shows that the reaction is exothermic.