Answer:
1.36moles
Explanation:
Given parameters:
Pressure of gas = 1.2atm
Volume of gas = 21liters
Temperature of gas = 145°C, in Kelvin gives 273 + 145 = 418K
Unknown:
Number of moles of the gas = ?
Solution:
To solve this problem, we are going to use the ideal gas equation which combines the three gas laws; Boyle's law, Charles's law and Avogadro's law.
Mathematically, it is given as;
PV = nRT
where;
P is the pressure of gas
V is the volume of gas
n is the number of moles
R is the gas constant = 0.082
T is the temperature
Substitute the values and solve for n;
1.2 x 21 = n x 0.082 x 418
solving for n;
n = 1.36moles
