Moles & Stoich
determine the number of moles of a substance given the mass of a sample.
What is divide grams of sample by its molar mass?
Units for concentration, M.
What is mol/L
The number of electrons in Al3+
What is ten
The only family (group) of elements that will bond with no other elements
What is the noble family (18 or 8A)
pH 8.1
What is a weak base?
The number of atoms in two moles of a sample
What is 1.2 x 1024?
What happens to pressure of a gas when temperature goes up
What is pressure goes up
Number of sig figs in 0.0030800
What is 5
Elements with similar properties
What is in the same group or family?
name of HCN?
What is hydrocyanic acid?
Empirical formula of benzene, C6H6
What is CH?
Concentration of a solution of 3.0 moles of CaCl2 in 1500 mL
What is 2.0 M
Matter can neither be created nor destroyed
What is Law of Conservation of Mass?
Electrons in the outermost energy level
What are valence electrons?
HSO3 1- is the ______ ______ of H2SO3
What is conjugate base?
First step in solving the following question.
Determine how many grams of nitrogen are needed to completely react with 4.2 grams of hydrogen.
N2 + H2 --> NH3
What is balance the equation?
Temperature is measured in __________ for gas law calculations.
What is kelvins
Substances with low vapor pressure have ______ due to _____________.
What is high BP, strong IMF
Shape of methane, CH4
What is tetrahedral?
A 30.7 mL sample of 0.451 M HCl is titrated with 28.10 mL of NaOH. What is the concentration of sodium hydroxide?
What is 0.493 M?
2Mg + O2 ---> 2MgO
When 2 moles of Mg react with 2 moles of O2, the limiting reactant is ______; because_____________
What is Mg because it will be consumed first.
Write out the ideal gas law
What is PV=nRT
Draw the Lewis dot structure for SO32-
what is pyramidal
elements with similar electronegativites
What is form non-polar covalent bonds
Using the titration graph that is drawn on the board, ______ is in the beaker, the volume at the equivalence point is ....., the significance of the equivalence point is......
What is base in the beaker, 25mL, moles acid = moles base = moles salt