Chemistry Flashcards

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1
Q

Time of flight
(atomic structure unit)

A
  • mass=Mr/avagadros (/1000 for unit)
    -velocity=distance/time
    -kinetic energy=1/2xmassxvelocity2
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2
Q

relative atomic mass
(atomic structure unit)

A

[ (Isotope A mass x Isotope A %) + (Isotope B mass x Isotope B%)/ sum of all %

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2
Q

moles
(amount of a substance unit)

A

mass/Mr

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3
Q

moles in solution dm3
(amount of a substance unit)

A

moles= concerntration/volume

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3
Q

moles in solution cm3
(amount of a substance unit)

A

(concerntration x volume)/1000

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4
Q

moles in gas
(amount of a substance unit)

A

volume/24

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5
Q

ideal gas
(amount of a substance unit)

A

Pv=nRT
p-pa
v-m3 (1000000cm3 = 1m3)
t-kelvin (c+273)

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6
Q

percentage yield
(amount of a substance unit)

A

(actual yield/theoretical yield) x 100

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7
Q

atom economy
(amount of a substance unit)

A

(Mr of desired product/ Mr of all reactants) x 100
(includes big number)

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8
Q

density = mass/volume

A
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