Moles
What is the value of Avogadro's number?
6.022x10^23
The sum of the atomic weights for the atoms in a chemical formula is known as what?
Formula Weight
Moles of solute divided by volume of solution (L) is used to solve for what?
Molarity
The calculation of the quantities of reactants and products involved in a chemical reaction is called what?
Stoichiometry
The formula that shows the simplest whole-number ratio of elements in a compound
Empirical Formula
The mass of 1 mole of a substance is called what (expressed as g/mol)
Molar Mass
The unit amu stands for what?
Atomic Mass Units
What does the unit ppb stand for?
Parts Per Billion
Antoine Lavoisier developed what law of chemistry?
Law of Conservation of Mass
What is the empirical formula of C20H5O25?
C4HO5
What is the molar mass of Oxygen?
15.999 g/mol
What is the percent composition of oxygen in a diatomic O2 molecule?
100%
What is the mass percentage of salt (3.0g) in a saltwater solution that has a mass of 120g?
2.5%
Which number is the coefficient for the following formula: 4H2O
4
What is it called when a lab student decreases the concentration of a solution by adding more water?
Dilution
What is the molar mass of lead?
207.2 g/mol
What is the formula weight of tetracarbon decahydride?
58.12 amu
10.0 moles of solute is used to make a 130L solution, what is the molarity of the solution?
0.08M
Reactants appear on which side of a chemical equation?
Right side
In lab, you are given a solution with a molarity of 5M and a volume of 20L. What volume would the solution need to be if you want to create a solution with a molarity of 0.3M?
300L
What is the molar mass of sodium nitrate?
84.9947 g/mol
What is the percent composition by mass of calcium in calcium chloride?
36.1% calcium
What is the solvent of a salt-based aqueous solution?
Water
What is the coefficient of Cl after the following chemical equation is balanced:
Al(s) + Cl2(g) -> AlCl3(s)
2Al(s) + 3Cl2(g) -> 2AlCl3(s)
Answer: 2
What is the name of the following cation: NH4+
Ammonium Ion