Constants
Definition of a constant
What is a quantity that is unknown but assumed to have a fixed value in a specified mathematical context? (or) What is a theoretical or experimental quantity, condition, or factor that does not vary in specified circumstances?
Formula to find energy
What is E=hv? (E is equal to Planck's constant times frequency)
Structural Formula
What is a formula showing the linkage of the atoms in a molecule using a diagram?
Boyle's Law
What is pressure and volume are inversely proportional when temperature is kept constant?
Formula to find the speed of light
What is c=λν? (c is equal to lambda times nu)
The speed of light
What is 3.00x10^8?
Percent yield formula
What is % yield=(actual yield/theoretical yield)x100?
Chemical Formula
What is a formula that tells the number of atoms of each element in a compound?
Charles's Law
What is volume and temperature are directly proportional when pressure is kept constant?
Resonance
What is the delocalization of electrons?
Avogadro's Number
What is 6.022×10^23?
Formula for finding mass percentage
What is mass %=(total mass of element/molar mass of compound)x100?
Molecular Formula
What is a formula that gives the total number of atoms of each element in each molecule of a substance?
The mole concept
What is 1 mole=6.022x10^23 atoms?
Bond enthalpy
What is the amount of energy required to break one mole of a specific bond?
Planck's constant
What is 6.626×10^-34 J/s?
Formal charge formula
What is the # of valence electrons - [# non-bonding electrons + (1/2 of bonding electrons)]?
Empirical Formula
What is a formula showing the simplest ratio of elements in a compound rather than the total number of atoms in the molecule?
Rutherford's model
What is a model that shows that an atom is mostly empty space, with electrons orbiting a fixed, positively charged nucleus in set, predictable paths?
Duality formula
What is λ=h/mv? (lambda is equal to Planck's constant divided by momentum)
Rydberg's constant
What is 1.096776x10^7 m^-1?
Formula to find atomic weight
What is ∑[(mass of individual isotope) x (relative functional abundance found in nature)]?
Steps for determining the empirical formula of a compound
What is...
Step 1: Obtain the mass of each element present in grams.
Step 2: Determine the number of moles of each type of atom present.
Step 3: Divide the number of moles of each element by the smallest number of moles.
Step 4: Convert numbers to whole numbers. This set of whole numbers are the subscripts in the empirical formula.?
Bohr's Model
What is a planetary model in which the negatively-charged electrons orbit a small, positively-charged nucleus similar to the planets orbiting the Sun?
Schrödinger wave equation
What is Hψ=Eψ? (H times psi is equal to E times psi)