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Science > Equations > Flashcards

Equations Flashcards

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1
Q

Number of neutrons

=

A

Mass number - atomic number

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2
Q

Amount (mol) =

A

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

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3
Q

Volume of gas =

A

Amount (mol) x 24dm3

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4
Q

Concentration of a solution =

A

Amount of substance (mol) / volume (dm3)

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5
Q

Percentage yield =

A

Yield from reaction / maximum theoretical yield x 100

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6
Q

Atom economy =

A

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

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7
Q

Rate of reaction =

A

Amount of reactant used / time

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8
Q

Retardation =

A

Distance moved by substance / distance moved by solvent

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9
Q

Magnification =

A

Size of image / size of real object

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10
Q

Weight =

A

Mass x gravitational field strength

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11
Q

Work done =

A

Force x distance

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12
Q

Force applied to a spring =

A

Spring constant x extension

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13
Q

Moment of a force =

A

Force x distance

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14
Q

Pressure

A

Force / surface area

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15
Q

Distance travelled =

A

Speed x time

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16
Q

Acceleration =

A

Change in velocity / time taken

17
Q

Resultant force =

A

Mass x acceleration

18
Q

Momentum =

A

Mass x velocity

19
Q

Kinetic energy =

A

0.5 x mass x (speed)2

20
Q

Gravitational potential energy =

A

Mass x gravitational field strength x height

21
Q

Power =

A

Energy transferred / time

22
Q

Power =

A

Work done / time

23
Q

Efficiency =

A

Useful output energy transfer / useful input energy transfer

24
Q

Efficiency =

A

Useful energy output / total energy output

25
Q

Wave speed =

A

Frequency x wave length

26
Q

Charge flow =

A

Current x time

27
Q

Potential difference =

A

Current x resistance

28
Q

Power =

A

Potential difference x current

29
Q

Power =

A

(Current)2 x resistance

30
Q

Energy transferred =

A

Power x time

31
Q

Energy transferred =

A

Charge flow x potential difference

32
Q

Density =

A

Mass / volume

Science (4 decks)

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