Chem 3

Thermodynamics

100

Change of enthalpy is negative

Exothermic

200

q

heat

300

Cp

Specific heat capacity

400

T_final - T_initial

Change in Temperature

500

Heat flows from higher to lower temperature

Zeroth Law of Thermodynamics

Gas Laws

100

PV = k

Boyle's Law

200

V=bT

Charles' Law

300

P_T = P_A + P_B + P_C

Dalton's Law of Partial Pressure

400

PV=nRT

Ideal Gas Law

500

Value of R (pressure in atm)

0.0821

The Atom

100

Nucleons

Protons and Neutrons

200

In a neutral atom: #P = ____

# of electrons

300

An ion with a positive charge

Cation

400

Z = 6 ; A = 14  How many neutrons?

8

500

Calcium cation has lost ____ electrons

2

Lab Stuff

100

Protects eyes

Safety goggles

200

Scale accurate to 0.0001 grams

Analytical balance

300

Beaker = 125 g ; Beaker + KI= 128 g

3 g

400

Vents air to outside

Fume hood

500

Technique to determine the concentration of an acid

Titration

1 mole

100

# of atoms

6.02 x 10²³

200

Volume of ideal gas at STP

22.4 L

300

Molar mass of LiOH

24 g/mol

400

Abbreviation for a mole

n

500

N₂ + 3 H₂O ----> 2 NH₃ ; Ratio of N₂ to H₂O

1:3