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Molar Mass
Moles, Volume, and Density
Percent Composition and Formulas
Review
100
The SI unit for measuring the amount of a substance
What is mole?
100
The number of representative particles in .400 mol KCl
What is 2.41 x 10^23 formula units KCl
100
The volume that .375 mol of oxygen gas occupies at STP
What is 8.4L oxygen
100
The percent mass of each element in aluminum carbonate?
What is 23.1% Al, 15.4% C, 61.5% O
100

Differentiate between a neutral atom, ion, and isotope

Neutral atoms have the same number of protons and electrons

Ions have a charge and therefore a change in the electron number

Isotopes have the same number of protons but a different number of neutrons

200
The value of Avogadro's number
What is 6.02 x 10^23?
200
The mass of 1.00 mol of nitrogen gas
What is 28.0 g/mol
200
Units for density of a gas
What is g/L?
200
The percent composition of a 13.60g sample of a compound containing only magnesium and oxygen that decomposes and produces 5.40g of oxygen
What is 39.7% O and 60.3% Mg
200

The number of sig figs contained in the following: 3104, 3300, .0005, and .00230

4, 2, 1, and 3, respectively

300
The acronym STP means
What is standard temperature and pressure?
300
The number of moles in 937g of calcium acetate
What is 5.93 mol Ca(C2H3O2)2
300
The molar mass of a gaseous compound with a density of 1.964 g/L at STP
What is 44.0 g/mol?
300
The number of grams of sulfur in 3.54g of hydrosulfuric acid
What is 3.33g S
300

The number of each subatomic particle in a Strontium-90 ion

p=38, n=52, e=36

400
The value of temperature, pressure, and volume at STP
What is O C, 1 atm (101.3 kpa), and 22.4L, respectively?
400
The molar mass of phosphoric acid
What is 98.0 g/mol
400
The density of krypton gas at STP
What is 3.74 g/L of Kr
400
The empirical formula of a compound comprised of 25.9% N and 74.1% O
What is N2O5
400

Give the name for the following compounds: SnCl4, P4S2, and H3N.

Tin (IV) Chloride or Stannic Chloride, Tetraphosphorus Disulfide, and Hydronitroic acid

500

The representative particles in elements, molecular compounds, and ionic compounds

What are atoms, molecules, and formula units, respectively

500
The mass of 4.97 mol of magnesium hydroxide
What is 289.8 g Mg(OH)2
500
The density of carbon dioxide gas at STP
What is 1.96 g/L CO2
500
The molecular formula of a compound containing 50.7% C, 4.2% H, and 45.1% O and a molar mass of 142g
What is C6H6O4
500

The electron configuration AND noble gas configuration for Gold

1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d10 6s1 

[Xe] 4f14 5d10 6s1