Formulas Flashcards by Sabina Musaeva

Ideal gas law

PV = nRT

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R is equal

0.08 Latm / mol K

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Molarity formula (molar concentration)

M= mol / V

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Molar formula

mol = m/MW

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Fraction remaining of the half life is

1/2^n
n- number of half lives

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Energy photon formula

E = hc/ wavelength or E= h* frequency

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Planck’s constant is

h= 6.6 * 10^-34 J*s

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Speed of light is

c = 3.0 * 10^8 m/s

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Frequency formula

f = c/wavelength

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Density formula

p = mass/volume

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Cube volume formula

S^3

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Measures activity formula

1/2^n * initial activity
While initial activity= 2^n * measured activity

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Total percent mass of the solution in the combine mass

Solute mass / (solute mass + solvent mass) *100%

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ppm formula

Mass of solute (mg) / mass of solution (kg)

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Unit conversion

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Percent yield formula

Extent at which the starting materials are converted into products

(Actual field/ theoretical yield) * 100%

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Kw formula

(H3O+) (OH-)= 1 * 10e-14

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pH formula

pH = - log (H3O+) = -log (H+)
If OH is a reactant than pH decreases because H3O increases and vice versa

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Power formula

Watts
P= Work/time = PE/t = mgh/t or KE/t = 0.5 mv^2
Or P = work/time = F*v

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Heat formula

q = mc delta T

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Pressure formula

P= Force/ Area

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Work formula

W= F * d= P * delta V
or W= delta KE = KEf -KEi

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Area of triangle

1/2b * height

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Elastic force is

Fel = -kx
k - spring constant ( on the graph it equals slope = delta y/ delta x)

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Torque equation

= r* F sin angle = r* F

Elastic pontential force

1/2 kx^2

Acceleration

v/t m/s^2

Velocity is equal to

v= d/t

How many ms in 1 seconds?

1s = 1000 ms

Accelerated motion formula

d = v0 * t + 1/2 at^2

Total mechanical energy is

PE + KE

Smells law of light refraction

n1 sin angle1 = n2 sin angle 2 n1/n2 = sin angle 2/ sin angle 1

Coefficient of kinetic friction equals with angles

Sin angle / cos angle

Potential energy of a spring

Uel = 1/2 kx^2

Joules is equal

N*m

Magnification of two Lens system

M= M1 * M2 Or M= image/ object

Translational motion equations

v^2 = v0^2 + 2a delta x

1 kJ is equal to J?

1000 J

Cardiac output and area relationship

CO = Area * velocity

Kinetic energy

1/2 mv^2 KE = Work

Friction force

Ff = uk * mg Applied force = Ff

Slope

Rise/run

Horizontal and vertical components of motion

vx = v cos theta vy = v sin theta

Elastic force by Hookes Law is

Force that is needed when displacing a spring or other elastic object from its equilibrium point. Acts oppose the extension meaning toward the equilibrium point. Fel = -kx

Magnitude of vector is equal

d = sqrt x^2 + y^2

Acceleration with force

a = Fnet / m Fnet = - Fk

Newton second law

F= ma

Photon energy formula

E= h* f

Thermal expansion is

Delta L = a L delta T for solids Delta V = aC delta T for liquids Length or volume of a substance directly proportional to its change in T

Gravitation Potential energy

PE= mgh

Tension formula

T = Weight = mg

Cos 60 degrees and sin 60 degrees

0.5 0.9

Horizontal and vertical components tension

Tx = T cos Ty = T sin

Heat formula

q = mc delta T q= mL where L is the heat transformation or latent heat

Entropy

Delta S = S system + S surroundings > 0 S = Qrev / T

Sqrt of 2 is

1.4

Sqrt of 3

1.7

Joules unit

Kg* m^2 / s^2

Watt is equal unit

J/s

Newton’s third law of motion

F a on b = -F b on a

Buoyant force is

Object in fluid Fb = density* g* Vfluid While W (weight) of the object = density of object* g* V of object Cos a floating object Fb = weight of the object ( mg)

First law of thermodynamics

Delta U = W + Q U- internal energy W = P delta V

1 kJ is how many joules?

1000 J

Heat capacitance equation

C = q / delta T. (J/K). Or C= mc Amour of heat required to change the T of an object by 1 degree

Electric force formula

Fe = q (charge) * E (electric field) E = F/q

Period of motion

T = distance / speed T= time it takes to complete one full circle of motion Where distance is 2pai *radius

Radiation dose

Dose = energy / mass

Joules unit is

N * m

Watts unit

J/s

Pressure is

P= force / area

Mechanical advantage

Work done by the output force= work done by the input force Fidi = Fo do F0/ Fi = d0 di

Center of mass

CM= m1r1 + m2r2 + m3r3…/ m1+ m2+ m3

Specific rotation formula

specific rotation = observed rotation / (concentration g/ml * path length (dm))