Moles & Particles
Moles & Grams
Moles & Volume of gas at STP
Grams and Particles
Particles & Volume of gas at STP
100
Representative particle
What is the species present in a substand-usually atoms, molecules, or formula units?
100
Molar mass
What is the mass of one mole of any element or compoumd?
100
One mole
What is 6.02x10^23 representative particles of a substance?
100
Emprical formula
What is the formula that gives the lowest whole-number ratio of the elemants in a compound?
100
STP- Standard temperature and pressure
What is 0 degrees and 101.3 kPa
200
The number of molecules in 4.50 moles of H2O
What is 2.71 x 10^24 molecules?
200
Atomic mass
What is the mass of an atom of an element?
200
Molar volume
What is 22.4 L of any gas measured at STP?
200
The equation that represents the percent of mass of nitrogen in NH4NO3
What is 28.0g ------- x 100 ? 80.0g
200
The equation that should be used to fine the mass of a helium that has a volume of 7.00x10^2 L at STP
What is 7.00 x 10^2 L 4 g He ----------------- x --------- ? 22.4 L/mol 1 mol
300
The amount of oxygen atoms in 10 formula units of Al2(SO4)3
What is 120 atoms of oxygen?
300
9.1 grams
What is ?he mass of Hydrogen in 50.0 g of propane, C3H8?
300
one mole of any gas that volumes occupies at STP
What is 22.4 L?
300
the percent of mass of carbon in acetone, C3H6O
What is 62% C ?
300
The volume in Liters at STP of 2.50 mol of carbon monoxide
What is 56.0 L?
400
Avogadro's number
What is the number of representative partilces in a mole of a substance?
400
638 grams.
What is the number of rams in 6.50 moles of H2SO4?
400
The volume of 3.75 moles of O2 gas at STP?
What is 84.0 L?
400
Percent composition
What is the percent by mass of each element in a compound?
400
The density of a gaseous compound is 1.623 g/L at STP has a molar mass of...
What is 36.36 g?
500
The number of atoms contained in 0.25 moles of Fe.
What is 1.505x10^23 atoms?
500
The molar mass of MgCl2
What is 95.3 grams?
500
The volume of 15.0 kg of CO2
What is 7640 L of gas at STP?
500
Atomic mass
What is the mass in aum's of an atom of an element?
500
The molar mass of a compound that has a density of 0.650 g/L at STP?
What is 14.6 L?
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