formulas Flashcards
actual size
measured length / magnification
catalytic converter
reduction:
2NO – N2 + O2
oxidation:
2CO + O2 – 2CO2
aerobic respiration
C6H12O6 + 6O2 – 6CO2 + 6H2O ENERGYY
anaerobic respiration
C6H12O6 – 2C2H5OH + 2CO2
energy from specific heat capacity
q = m c ∆t
energy (J) = mass (Kg) x specific h. c. (J/g/K) x temp change (K)
moles in solid
moles
=
mass / Mr
concentration
moles in liquid
conc.
=
moles / vol (dm^3)
dm^3 into litres and cm^3
1 dm^3
=
1 litre
or
1000cm^3
moles in a gas
moles
=
volume / 24dm^3
work done
force x distance
force
mass (Kg) x acceleration (m/s^2)
GPE
gravitational potential energy
mass (Kg) x gravity x height from ground (m)
KE
kinetic energy
1/2 mass (Kg) velocity^2
1/2mv^2
efficiency
useful energy output / total energy input x 100
velocity
in terms of waves
f x λ
frequency (Hz or waves per second) x wavelength (m)