Equations Flashcards Preview

Science > Equations > Flashcards

Flashcards in Equations Deck (32):
1

Number of neutrons
=

Mass number - atomic number

2

Amount (mol) =

Mass of substance (g) / atomic mass (g/mol)

3

Volume of gas =

Amount (mol) x 24dm3

4

Concentration of a solution =

Amount of substance (mol) / volume (dm3)

5

Percentage yield =

Yield from reaction / maximum theoretical yield x 100

6

Atom economy =

Formula mass of desired product / sum of all formula mass of product x 100

7

Rate of reaction =

Amount of reactant used / time

8

Retardation =

Distance moved by substance / distance moved by solvent

9

Magnification =

Size of image / size of real object

10

Weight =

Mass x gravitational field strength

11

Work done =

Force x distance

12

Force applied to a spring =

Spring constant x extension

13

Moment of a force =

Force x distance

14

Pressure

Force / surface area

15

Distance travelled =

Speed x time

16

Acceleration =

Change in velocity / time taken

17

Resultant force =

Mass x acceleration

18

Momentum =

Mass x velocity

19

Kinetic energy =

0.5 x mass x (speed)2

20

Gravitational potential energy =

Mass x gravitational field strength x height

21

Power =

Energy transferred / time

22

Power =

Work done / time

23

Efficiency =

Useful output energy transfer / useful input energy transfer

24

Efficiency =

Useful energy output / total energy output

25

Wave speed =

Frequency x wave length

26

Charge flow =

Current x time

27

Potential difference =

Current x resistance

28

Power =

Potential difference x current

29

Power =

(Current)2 x resistance

30

Energy transferred =

Power x time

31

Energy transferred =

Charge flow x potential difference

32

Density =

Mass / volume