At 40.0°c, the pressure inside a nitrogen-filled tennis ball with a volume of 148 cm is 235 kpa. how many moles of nitrogen (n2) are in the tennis ball? a 13.4 mol b 4.22 * 102 mol c 1.34 x 10-2 mol od 0.105 mol

Answer : The correct option is, (B)

Explanation :

To calculate the moles of nitrogen gas we are using ideal gas equation:

where,

P = pressure of nitrogen gas = 235 kPa = 2.319 atm

Conversion used : (1 atm = 101.325 kPa)

V = volume of nitrogen gas =

Conversion used : (1 L= 1000 mL)

T = temperature of nitrogen gas =

R = gas constant = 0.0821 L.atm/mole.K

n = moles of nitrogen gas = ?

Now put all the given values in the ideal gas equation, we get:

Therefore, the number of moles of nitrogen gas are,

that's what i got you can count the number of atoms