MOLAR MASS
What is the molar mass of oxygen gas?
32 grams per mole
How many grams are in 5 moles of hydrogen gas?
10.08 grams
How many moles are in 35 grams of sodium?
1.522 moles
42 grams of ____ is 0.75 moles
iron
How many molecules are in one mole?
6.02x10^23
What is the molar mass of NaCl?
58.5 gram per mole
How many grams are in 3.2 moles of Helium?
12.80 grams
How many moles are in 3.9 grams of calcium?
0.097 moles
3.8 moles of ___ is 248.444 grams
Zinc
who introduced the mole?
Wilhelm Ostwald
What is the molar mass of magnesium sulfide?
56.38 grams per mole
How many grams are in 7 moles of MgCl2?
666.477 grams
how many moles are in 327 grams of magnesium sulfide?
5.80 moles
5.7 grams of ___ is 0.63 moles
beryllium
When was the mole introduced?
1896
What is the molar mass of CaCO3?
100.0869 grams per mole
How many grams are in 9 moles of aluminium phosphide?
521.6 grams
how many moles are in 560 grams of boron arsenide?
6.53 moles
78 grams of ___ is 0.93 moles
krypton
Explain the process of going from grams to moles.
You divide grams by the molar mass.
What is the molar mass of calcium chloride?
110.98 grams per mole
How many grams are in 6.3 moles of carbon dioxide?
277.3 grams
How many moles are in 888 grams of calcium chloride?
8 moles
462 grams of___ is 3.89 moles
tin
Explain the process of getting from grams to number of molecules.
First divide grams by molar mass to find number of moles then multiply that by 6.02x10^23 to find the number of molecules.