A high-pressure weather system occurs when atmospheric pressure increases above ambient air pressure. In the Southeastern U. S. during summertime, a high-pressure system, called the Bermuda high, typically raises air pressure from 30.0 to 30.5 inches of mercury. Increased air pressure also increases ambient air temperature through a process meteorologists call compressional heating. Calculate the temperature change, in degrees F, from compressional heating on a 1.00 ft^3 air sample when a high-pressure system covers a landmass with an initial ambient air temperature of 85.0ºF.

86.42 ºF

Explanation:

Use the ideal gas equation

P1V1/T1 = P2V2/T2

30 Inches * 1.00 ft^3      = 30.5 inches *1.00 ft^3

    85.0ºF                                  T2

make T2 subject of the formula gives

  T2 = 30.5 inches* 1.00 ft^3 * 85.0ºF   = 86.42 ºF

                 30 inches* 1.00 ft^3

it should be p1 v1 = p2 v2

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.