A model stands on a scale and finds her weight to be 105 pounds. If the pressure exerted by her feet on the scale is 2.16 pounds per
square inch, what is the area of her feet in cubic centimeters?
__cm2

The area = 313.612 cm²

Force (F) can cause objects to move

While pressure (P)is the force per unit area

weight=force=105 pounds(lb)⇒english units

pressure = 2.16 lb/in²

Thea are (A)

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :