Molar Mass
What is the molar mass of hydrogen?
2.02 g/mol
34.0g NH₃
2.00 mol
What is Avogadro's number?
6.02x10²³
0.100 moles of KI
16.6g
How many gold atoms are in 2.00 mols of gold(Au)?
1.20 x 10²⁴
What is the molar mass of CaO?
56.08 g/mol
17.0g of H₂O₂
0.500 mol H₂O₂
How is mole similar to a dozen?
it's a word that represents an amount of things/number
0.50 moles Cr₂O₃
76g
How many moles are 1.250 x10²³ molecules of glucose?
2.07 mol
What is the molar mass of NaOH?
39.997 g/mol
0.750g of Na₂CO₃
0.00708 mol
Which contains more atoms, a mole of calcium or a mole of mercury?
They both contain the same amount of moles, 6.02 x 10²³
1.500 moles of KClO
135.8g
How many nitrogen atoms in 2.79 mole of NH₃?
1.68 x 10²⁴ atoms
What is the molar mass of C₂H₅OH
46.07 g/mol
1.00 gram Ba(OH)
0.00584 mol
Which weighs more, a mole of sulfur or a mole of lead?
lead
3.40 x 10¯⁵ moles of Na₂CO₃
3.60 x 10¯³g
What is the mass of 3.13 x 1021 atoms of KBr?
.619g
What is the molar mass of baking soda/sodium bicarbonate?
84.01 g/mol
12.25 gram Sr(HCO3)2
0.05843 mol
What elements are diatomic and what does diatomic mean?
Bromine, iodine, nitrogen, chlorine, hydrogen, oxygen, and fluorine (Br, I, N, Cl, H, O, F). It means that when in elemental form, the atoms come in pairs.
5.10 X 10¯⁵ moles Sr(NO₃)₂
1.08g
If you have a 100 g sample of KMnO4, how many molecules of KMnO4are in the sample?
4 x 10²³