General Directions: You may use a non-graphing calculator, a periodic table, and

Question

General Directions: You may use a non-graphing calculator, a periodic table, and a formula sheet on this test. Please use a pencil and not ink. You only have this class period in which to take this test. Short Answer Complete sentences are not necessary. When converting a temperature from Celsius degrees to Kelvin, what number must be added to the Celsius temperature? The ideal gas constant is represented by what capital letter? What does STP represent? In the ideal gas law formula, what does the letter 'n' represent?

Explanation / Answer

1)

we know that

temperature in kelvin = temperature in celsius + 273.15

so

273.15 must be added to the celsius temperature to get Kelvin

2)

the ideal gas constant is given by the letter " R "

3)

STP refers to the conditions of standard temperature and pressure

they are

pressure = 1 atm

Temperature = 0 C

4)

the ideal gas equation is given by

PV = nRT

here

P = pressure

V = volume

n = number of moles of gas

R = ideal gas constant

T = temperature

so

n represent number of moles of gas

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