Definitions
Conversions
Compositions
Formulas
Relationships and Units
100
These are the three ways to measure the amount of something.
What are count, mass, and volume?
100
There are this many moles in 39.1 grams of potassium.
What is 1 mole?
100
This is the mass percentage of oxygen in a molecule of O2 gas.
What is 100%?
100
This compound is composed of carbon and hydrogen atoms in 1:4 ratio.
What is CH4?
100
These are the units (plural) needed to indicate the molar mass of an element or compound.
What is grams/mole? (grams per mole)
200
This is the amount represented by the term 'mole' in chemistry.
What is 6.02X10^23?
200
There are this many atoms in a molecule of dinitrogen pentoxide.
What is 7?
200
This is the percentage of carbon in propane, C3H8, which is 18% hydrogen by mass.
What is 82%?
200
This is the empirical formula for a compound which is 46.7% Nitrogen and 54.3% Oxygen.
What is NO?
200
This is the number of Liters one mole of a gas occupies at STP.
What is 22.4 Liters?
300
These are the three types of representative particles.
What are atoms, molecules, and formula units?
300
There are this many moles of water in 1.20X10^24 molecules.
What is 2 moles?
300
These are the mass percentages of Iron and Oxygen when 13.3 grams of Iron combines with 5.7 grams Oxygen.
What are 70% Iron and 30% Oxygen?
300
This is the molecular formula for glucose, whose molar mass is 180.0 grams and empirical formula is CH2O.
What is C6H12O6?
300
These are the two steps needed to convert from grams of a sample of a compound to the number of atoms in the entire sample.
What is grams to moles and moles to atoms?
400
This is the mass of one mole of atoms or molecules.
What is the molar mass?
400
There are this many liters in 17.0 grams of Neon gas.
What is 18.9 liters?
400
This is the percentage of nitrogen in ammonium nitrate.
What is 35%?
400
Empirical formulas are reduced forms of _______, just as formula units are reduced forms of _______.
What are molecular compounds and ionic compounds.
400
These are the units that we need to convert to moles using our Y-charts.
What Liters, grams, and representative particles?
500
This is 1 atm (or 101.3 kPa) and 0 degrees celsius.
What is Standard Temperature and Pressure?
500
This is the mass of 2.4X10^24 carbon atoms.
What is 48.0 grams?
500
These are the mass percentages of Sodium and Oxygen in Sodium Oxide.
What are 74.2% sodium and 25.8% oxygen?
500
This is the Law which states that we cannot have decimals in the subscripts of compounds.
What is the Law of Definite Proportions?
500
By definition, the density of a gas at STP is the ________ divided by ___________.
What is the molar mass (grams/mol) divided by 22.4 liters/mol?
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