True or False
One mole of a substance has the same number of particles as one mole of any other substance
Which mole contains more molecules or do they contain the same amount?(1 mol H2O2, 1 mol C2H6, 1 mol CO)
They all contain the same amount of molecules.
What is the percent composition of Hydrogen in H20
11.11%
Name the representative particle for oxygen gas
Molecule.
Molar mass is the number of moles of a substance that would have a mass of 1 gram
False
1 mol C2H6
What is the percent composition of Oxygen in H2O
88.89%
Name the representative particle for sodium sulfide
Formula unit
What is the correct molar mass for the compound CaBr2
200 g/mol
If the atomic mass of manganese is 54.94 amu, then it's molar mass is 54.94 g/mol
True
Of these choices ( 18.0 g/mol, 36.0 g/mol, 9.0 g/mol, 12.0 g/mol) Which is the correct molar mass of water?
18.0 g/mol
What is the percent composition by mass of oxygen in NaOH?
16%
Name the representative particle for sulfur dioxide
What is the mass of 8 moles of sodium chloride
468 grams
A mole is defined so that one mole of carbon-12 atoms has a mass of exactly 12 grams
0.30 mol of KNO3 contains how many grams?
3.0 x 10^1 grams
What is the percent composition of Calcium in CaO
71.469%
Name the representatve particle for Potassium
Atom
How many molecules are in 3.6 grams of NaCl
3.7 x 10^22
An elements molar mass is equivalent to the atomic number of the element.
False
1.26 mol of KOH contains how many molecules.
7.59 x 10^23 molecules
What is the percent composition of Oxygen in CaO
28.531%
What is the representative particle for NaCl
Formula Unit
HOw many grams are in 1.946 moles of NaCl
113.8 g