Avolleyball is full of pressurized air. the air temperature is 24.6˚c. the volleyball’s absolute pressure is 130.75 kilopascals, and its volume is 5.27 liters. how many moles of air are inside the volleyball? a. 0.278 mol b. 3.37 mol c. 3.59 mol d. 25.2 mol e. 28.0 mol

             0.278 mol

Data Given:

                   Pressure  =  P  =  130.75 kPa  =  1.29 atm

                   Volume  =  V  =  5.27 L

                   Temperature  =  T  =  24.6 °C  =  297.75 K

                   Gas Constant  =  R  =  0.08215 atm.L.mol⁻¹.K⁻¹

Formula Used:

                   P V  =  n R T

Solving for "n",

                   n  =  P V / R T

Putting values,

             n  =  (1.29 atm × 5.27 L) ÷ (0.08215 atm.L.mol⁻¹.K⁻¹ × 297.75 K)

             n =  0.277 moles

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance