Gas Laws and Conversions

The video tutorial explains how to convert liters to moles for gases using two methods: one for special conditions like STP (Standard Temperature and Pressure) and SATP (Standard Ambient Temperature and Pressure), and another using the ideal gas law for other conditions. It provides step-by-step examples for both STP and SATP, and details the use of the ideal gas law, including necessary unit conversions and significant figures.

What are the two special conditions under which a shortcut formula can be used to convert liters to moles?

• STP and SATP

• NTP and RTP

• ATP and BTP

• CTP and DTP

What is the molar volume constant at STP?

• 18.6 liters per mole

• 20.0 liters per mole

• 22.4 liters per mole

• 24.8 liters per mole

How many significant figures should be used when converting 17 liters at STP to moles?

• Two

• Five

• Four

• Three

What is the molar volume constant at SATP?

• 28.2 liters per mole

• 26.0 liters per mole

• 24.8 liters per mole

• 22.4 liters per mole

Which formula is used to convert liters to moles under non-standard conditions?

• P = nRT/V

• V = nRT/P

• n = PV/RT

• PV = nRT

What is the value of the gas constant R in the ideal gas law?

• 8.314 liters bar per mole Kelvin

• 8.314 liters Torr per mole Kelvin

• 8.314 liters atmospheres per mole Kelvin

• 8.314 liters kilopascals per mole Kelvin

How do you convert Celsius to Kelvin?

• Divide by 273.15

• Subtract 273.15

• Add 273.15

• Multiply by 273.15

What unit should pressure be in when using the ideal gas law with R = 8.314?

• Bar

• Kilopascals

• Torr

• Atmospheres

What happens to the number of significant figures when you add 273 to a temperature in Celsius?

• It becomes zero

• It increases

• It stays the same

• It decreases

What is the final number of moles when converting 42.3 liters of gas at non-standard conditions using the ideal gas law?

• 1.39 moles

• 2.02 moles

• 0.76 moles

• 3.14 moles