Moles <-> Particles
How many atoms of carbon are in 1 mole of carbon?
6.02 x 1023 atoms of carbon
What is the mass of one mole of an element?
The mass of the element found on the periodic table
What is Avogadro's Number, and when do we use it?
6.02 x 1023. We use it when converting between moles and atoms/molecules.
How many grams are in 6.02 x 1023 atoms of carbon?
12.01 grams of carbon
How many molecules of carbon dioxide are in 2 moles of carbon dioxide?
1.204 x 1024 molecules of carbon dioxide
What is the molar mass of Sulfur?
32.06 g/mol
How many grams in 6.50 moles Cu?
413 g Cu
In words, describe how the mass in grams of the element is converted to amount in moles.
Divide the mass in grams by the molar mass of the element.
How many grams are in 10.5 x 1023 atoms of Mg?
42.39 grams Mg
How many atoms are in 0.250 moles of sulfur?
1.51 x 1023 atoms of sulfur
In words, describe how we determine the molar mass of a compound.
Adding together the masses (which are found on the periodic table) of each element that are present in the compound and accounting for how many of that element is present.
In words, describe how the number of atoms is converted to amount in moles.
Divide the number of atoms by Avogadro's Number.
How many atoms are in 6.755 grams of Pb?
1.913 x 1010 atoms of Pb
How many moles in 3.011 x 1023 atoms Mg?
0.5000 mol Mg
What is the molar mass of O2?
32 g/mol
How many moles are there in 13.8 grams of NaCl?
0.236 moles of NaCl
In words, describe how the mass in grams of the element is converted to number of atoms.
Divided the mass in grams by the molar mass of the element, then multiply that by Avogadro's Number.
How many atoms are in 305.04 grams of copper?
5.026 x 1024 atoms of copper
7.23 x 1025 molecules of caffeine are equal to how many moles of caffeine?
120.1 moles of caffeine
How many atoms in 0.02550 g Pt?
7.872 x 1019 atoms Pt
What is the mass in grams of 3 moles of carbon disulfide, CS2?
228 grams of carbon disulfide
How do you set up a conversion factor? Use given/wanted in place of any unit or number to describe the correct unit placement.
Given (Wanted/Given) = Wanted
How many molecules are present in one gram of carbon dioxide (CO2)?
1.368 x 1022 molecules are in one gram of carbon dioxide.