CH-003 EQUATIONS

What is the conversion factor from feet to miles?

1 mi = 5280 ft

What is the conversion factor from inches to centimeters?

1 in = 2.54 cm

What is the conversion factor from pounds to ounces?

1 lb = 16 oz

What is the conversion factor from kilograms to pounds?

1 kg = 2.21 lbs

What is the conversion factor from gallons to quarts?

1 gal = 4 qts

What is the conversion factor from litres to quarts?

1 L = 1.06 qts

What is the conversion factor from centimeters to milliters?

1 cm³ = 1 mL

What is the equation for density?

density = m/v (mass/volume)

What is Avogadro’s Number?

1 mol = 6.02 × 10^(23) atoms/particles/etc

What is the equation for the percent yield of a substance?

( (Actual Yield) / (Theoretical Yield) ) * 100

What is the equation for kinetic energy?

KE = (1/2)(mass in kg)(velocity in m/s)

What is the conversion factor from calories to joules?

1 cal = 4.184 J

What is the conversion factor from calories to Calories to kilocalories?

1000 cal = 1 Cal (nutrition) = 1 kcal

What is the equation for change in energy from heat and work?

(delta)E = q + w

What is the equation for the internal energy of a system (q) ?

q = mC(delta)T

What is the conversion factor from one system to its surroundings?

Q(system) = - Q(surroundings)

What is the equation of the speed of light?

c = 3.00 × 10^8 meters/seconds

What is the equation of Planck’s constant?

h = 6.626 × 10^-34 J*s

What is the equation for a wavelength?

wavelength = (h * c) / E

What is the conversion factor for an electron volt from joules?

1 eV = 1.609 × 10^(-19) J

What is the equation for Coulomb’s Law?

F = k( (q1 * q2)/r² )

What is the conversion factor from atmospheres to mmHg?

1.000 atm = 760.0 mmHg

What is the conversion factor from atmospheres to Torr?

1.000 atm = 760.0 Torr

What is the conversion factor from atmospheres to psi?

1.000 atm = 14.69 psi

What is the conversion factor from atmospheres to Pa?

1.000 atm = 101325 Pa

What is the relationship of pressure to particle collisions? (not an equation)

Pressure is directly proportional to the number of particle collisions in a substance

What is the Ideal Gas Constant (R) ?

0.0821 L * atm / mol * K

What is the Ideal Gas Equation?

PV = nRT

What is the Combined Gas Law Equation?

(P1 * V1) / (n1 * T1) = (P2 * V2) / (n2 * T2)

What is the amount of energy required to melt 1 mol of water? (fusion)

6.02 kj / mol

What is the amount of energy required to vaporize 1 mol of water? (vaporization)

40.6 kj / mol

What is the dilution equation?

M1 * V1 = M2 * V2, where M = mol / L

What is the conversion factor for solubility?

1 g solute / 100 g solution

What is the Ion Product Constant, Kw ?

[H3O^+] * [OH^-] = 1.0 × 10^(-14)