Aconvert a pressure of 43,836 pa to units of atm. a. 433 atm b. 4.33 x 104 atm ¢. 43,300 atm d. 0.433 atm e. none of the above 43,8 3 6pax ko o 420

d. 0.433 atm

Explanation:

Pascal and atmosphere are both units of pressure.

The expression for the conversion of pressure in Pascal to pressure in atm is shown below:

P (Pa) = P (atm)

Given the value of pressure = 43,836 Pa

So,

43,836 Pa = atm

Pressure = 0.433 atm

Hence, option d. 0.433 atm is correct.

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.