Test 10 Flashcards
Term used to refer to the mass of a mole substance
Molar mass
Amount of substance that contains 6.02x10^2
Mole
How can you convert among the count mass and volume of something
Knowing how the count mass and volume of an item can relate to a common unit allow you to convert among these unit
How do chemist count the number of atoms molecules and formulas units in a substance
The mole allows chemist to count the number of representatives particles in a substance
How do you determined the molar mass of an element and of a compound
The atomic mass of an element expressed in grams is the mass of a mole of the element
How do you convert the mass of a substance to the number of miles of substances
Use the molar mass in a element to convert between mass of a substance and the moles of the substance
Equal volumes of gases at the same temperature and pressure contains equal numbers of particles
Avogadro hypothesis
How do you convert the volume of a gas at stp to the number of moles of the gas?
The molar volume is used to convert between the number of moles of gases and the volume of the gas at STP
The condition under the volume of a gas is measured standard temperature is 0°c
Standard temperature and pressure
The volume occupied by 1 mole of a gase at a standard temperature and pressure
Molar volume
How do you calculate percent composition of a compound
The percent by mass of en element in a compound is the number of grams of the element divided by grams times 100
A formula with the lowest whole number ratio of element in a compound;
Empirical formula
