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Chemistry A Level OCR B > Equations > Flashcards

Flashcards in Equations Deck (7)
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1

Mass number

Atomic number (number of protons) + number of neutrons

2

Speed of light (ms-1) (3.00x10+8 ms-1)

Wavelength (m) x frequency (s-1)

3

Energy of photon (J)

Planck constant (Js-1) x frequency (s-1)

4

Enthalpy change (🔺H) (enthalpy change of reaction)

H,products (sum of enthalpy changes of products) - H,reactants (sum of enthalpy changes of reactants)

5

Energy transferred (KJ)

Specific heat capacity (Jg-1K-1) (4.18) x mass (g) x temperature change (🔺T)

6

Density

Mass/volume

7

Number of particles

(Mass/molar mass(Mr)) x 6.02x10^23