To apply the ideal gas law to problems involving temperature, pressure, volume,

Question

To apply the ideal gas law to problems involving temperature, pressure, volume, and moles of a gas. The four properties of gases (pressure P, volume V, temperature T, and moles of gas n) are related by a single expression known as the ideal gas law: PV=nRT The variable R is known as the universal gas constant and has the value R=0.0821 Latm/(moleK). The units of R dictate the units for all other quantities, so when using this value of R, use units of atmospheres for pressure, liters for volume, and kelvins for temperature. part A A 300 L kiln is used for vitrifying ceramics. It is currently operating at 915 C , and the pressure is 1.100 atm . How many moles of air molecules are within the confines of the kiln? Express your answer to three significant figures and include the appropriate units. part B A 14.0 L gas cylinder has been filled with 7.80 moles of gas. You measure the pressure to be 4.60 atm . What is the temperature inside the tank? Express your answer to three significant figures and include the appropriate units.

Explanation / Answer

Part A:

PV = nRT

n = PV/RT

   = (1.1 *300)/(0.0821*(915+273))

   = 3.38 moles of air

Part B:

PV = nRT

T = PV/nR

   = (4.6*14)/(14*0.0821)

   = 56.0 K

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.