Moles Flashcards
How do gases compare with liquids and solids in terms of the distance between their molecules?
The particles in the solid are touching with very little space between them. The particles in a liquid usually are still touching but there are some spaces between them. The gas particles have big distances between them.
What is the meaning and values represented by STP?
Refers to the nominal conditions in the atmosphere at sea level
Standard Temperature and pressure
Temperature 0 degree celicus (273.15) degree kelvin or 32 degrees Fahrenheit)
Pressure 1 atm (101.325 kilo pascal or 760 Torr)
Boyles law relationship
Pressure and volume inversely
Charles law relationship
Volume and kelvin Tempature of gas are proportional
Gay Lussacs relationship
Kelvin Tempature and pressure of a gas are directly proportional
What is the standard molar of a gas
The molar volume of any gas at standard conditions is 22.4 L
Explain how to use the periodic table of the elements
Determine the molar mass of a compound
Take the average atomic mass listen on the period table and multiply it by the number of atoms present in the compound
Add the mass of each element to get the molar made of a compound in g/mol
Why is the concept of a mole so important in chemistry
It provides a way to measure the amount of a substance using Avogadro’s number which is the number of moles or atoms in a substance
Explain how you would find the mass of an element
On the period table
Explain how you would find the mole of a single element
C 6
6 mol C
Given to you
Explain how you would find the atomic mass of an element
Number of mole
multiplied by avogadro number
Divided by a mole
How to find moles to particle
(Atoms, molecule, formula unit )
Moles times 6.02x10^23
Mass diagram
Mass. Particles
Moles
Volume
Metric conversions
Given unit The unit you want
One of the given unit
