Ask Question
23 April, 14:10

1. How many moles of gas are in a sample of gas at a pressure of 1.2 atm, a

volume of 21 liters, and a temperature of 145 °C? (Hint: K = °C + 273)

+1
Answers (1)
  1. 23 April, 14:14
    0
    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
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “1. How many moles of gas are in a sample of gas at a pressure of 1.2 atm, a volume of 21 liters, and a temperature of 145 °C? (Hint: K = °C ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers