Purchase Solution

# Calculating moles and molecular mass

Not what you're looking for?

A steel bottle of 4.00 liters, initially evacuated, is filled with 4.00 grams of a pure gas. The bottle has an absolute pressure of 1.5375 Standard Atmospheres when the temperature is 300 Kelvin. R=0.0820 liter atm/mole K.

1) How many moles of gas does the bottle contain?

2) What's the molecular weight (in grams) of the mass?

3) If the gas is a hydrocarbon compound known to be a member of the paraffin series, CnH2n+2, what is the chemical formula of the compound?

##### Solution Summary

The expert calculates the moles and molecular mass achieved. The molecular weight of the mass is determined.

##### Solution Preview

1) To solve for the number of moles of gas, we can use the ideal gas law which says that P V = n R T. This can be rewritten as n = P V / (R T) to give the number of moles of gas. Since the volume (4 liters), pressure (1.5375 atm) and temperature (300K) are known you can calculate the ...

##### Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

##### Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

##### The Moon

Test your knowledge of moon phases and movement.

##### Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.