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Chemistry > Chapter 8 - Mole > Flashcards

Chapter 8 - Mole Flashcards

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1
Q

Formula for mole (when mass of s,l,g is involved)

A

Mole = mass divided by Ar/MR

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2
Q

Formula for mole (when volume of g is involved )

A

Mole = volume divided by 24dm3

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3
Q

Formula for concentration (mol/dm3) - derive from formula

A

Concentration is mole divided by volume

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4
Q

Formula for concentration (g/dm3) - derive from formula

A

Concentration = mass divided by volume

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5
Q

Formula for concentration (mol/dm3) from g/dm3

A

Concentration (mol/dm3) = concentration (g/dm3) divided by Mr

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6
Q

Cm3 to dm3

A

Divide by 1000

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7
Q

Mol/dm3 to g/dm3

A

Times Mr

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8
Q

Formula for Density (g/dm3) - to find density of g

A

Mr divided by 24dm3

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9
Q

Formula for density (g/dm3) - when density of liquid is asked for

A

Mr divided by volume

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10
Q

Element (Mg)

A

Mg = 24

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11
Q

Element (O2)

A

16 times 2 = 32

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12
Q

Simple molecular -2 carbon dioxide(co2)

A

2 CO2 = 12 + (2 times 12)
Din tends to care about the number at front

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13
Q

Ionic- 2 cuco3 (copper carbonate)

A

2 CuCO3 = 64 + 12 + (16 times 3)
Can ignore the two in the front

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14
Q

Define relative atomic mass

A

Average mass of one ATOM of substance compared with 1/12 mass of one atom of carbon-12

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15
Q

Define relative molecular mass

A

Average mass of one MOLECULE of the substance compared with 1/12 mass of one atom of carbon-12

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16
Q

Define mole

A

Amount of substance that contains 6times 10 to the power of 23 particles

17
Q

Define Avogadro constant

A

6 times 10 to the power of 23

18
Q

Define molar mass

A

Mas of one mole of any substance(g/mol)

19
Q

Define molar volume

A

Volume of 24dm3 that one mole of any gas occupies at room temperature and pressure

20
Q

What is meant by concentration of a solution

A

Concentration of a solution is given by the amount of solute dissolved in a unit volume of the solution

21
Q

What is meant by a solution of 1mol/dm3

A

The solution has one mole of solute dissolved in 1dm3 of solution

22
Q

Define limiting reactant

A

Reactant that is completely used up in a reaction

23
Q

Define excess reactant

A

Reactant that is added in excess and is left unreacted

Chemistry (19 decks)

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