PHYSICAL QUANTITY

Temperature: formulas and units of measurement

Temperature: symbol T, t, unit K, °C. Formulas and explanations for MCT and thermodynamics.

T,\ tT, t\text{К},\ ^\circ\text{C}kelvin, degree Celsius

KEY CONNECTIONS

Formulas

T=273+tT = 273 + t

\left\langle E\right\rangle=\frac{3}{2}kT⟨E⟩ = (3/2)kT

p=nkTp = nkT

v_{\text{кв}}=\sqrt{\frac{3RT}{M}}vкв = √(3RT / M)

pV=\frac{m}{M}RTpV = (m/M)RT

\frac{pV}{T}=\operatorname{const}pV / T = const

\frac{p}{T}=\operatorname{const}\quad(V=\operatorname{const})p / T = const при V = const

\frac{V}{T}=\operatorname{const}\quad(p=\operatorname{const})V / T = const при p = const

Note: The temperature increments are equal: ΔT in Kelvin is numerically equal to Δt in degrees Celsius.

NOTATION

T: Temperature is a measure of the thermal state of the body.
E: The average kinetic energy of a particle is the average energy of thermal motion of one particle.
k: Boltzmann's constant is the coefficient of correlation between temperature and particle energy.
p: Pressure is the force per unit surface area.
n: Concentration is the number of particles per unit volume.
v_{\text{кв}}: Root mean square velocity is a characteristic of the thermal motion of gas particles.
R: The universal gas constant is the coefficient of connection between the parameters of an ideal gas.
M: Molar mass is the mass of one mole of a substance.
V: Volume is the size of the area of space occupied by a body.
m: Mass is a scalar physical quantity that is a measure of the inertia of a body.

THEORY

PRACTICE