study of quanative relationships between reactions and products in a chemical reaction.
100
What is formula mass?
The mass in atomic mass units of one formula unit.
100
Caculate Molar Mass for:
HCL
36.5
100
What volume is occupied by 5.00 moles of N2 at STP?
112L
100
True or false mole ratios can NOT be used as conversion factors between moles of reactants and products
False!
200
What is a mole?
the group or unit of measure used to count numbers of atoms, molecules, and ions or formula units of substances.
200
What is molar volume?
the volume that a mole of a gas occupies at a pressure of one atmosphere and a temperature of 0.00 degrees C.
200
PbSO4
303.2
200
How many moles of O2 are contained in 88.4 liters at STP?
3.95 moles O2
200
To convert one compound to another compound , the proper mole ratio must always be used. If mass is given, the value must be converted to moles. A mass ratio will not yield a correct answer.
True!
300
What is Avogadro's Number
The number of things in one mole is 6.02 X 10^23.
300
What is the ideal gas law?
describes the behavior of an ideal gas in terms of pressure, volume,temperature, and number of moles of gas.
300
MgCO3
84.3
300
How many grams are there in 7.5 liters of NH3 gas at STP
55.0 g
300
The mass of one mole of a pure substance is called the formula mass.
False! Its called molar mass
400
What is Molar Mass?
The mass of one mole of a pure substance.
400
What is the theoretical yield?
The amount of product of a chemical reaction predicted by stoichiometry
400
H2SO4
98.4
400
True or false: When converting between mass and volume, the number of moles must be determined.
True!
400
The molar volume of a gas is the volume of a solid occupies at a pressure of one atmosphere and a temperature of 0.00 degrees C.
False! volume of a gas
500
What is Molecular Mass?
The mass in atomic mass units of one molecule of a covalent compound.
500
What is percent yield?
the ratio of the actual yield to the theoritical yield expressed as a present.
500
AL(OH)3
472.7
500
What volume is occupied by 25.0 g of water vapor at STP?
31.1 L(H20)
500
Avogardo's Principle states the equal volumes of gases at the same tempratures and pressure contain unequal numbers of moles of gases.