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1.1 Chemistry > The Mole Refresh > Flashcards

The Mole Refresh Flashcards

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1
Q

How many particles are in one mole?

A

6.022 x 10 to the power of 23

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2
Q

What is molar mass the same as?

A

1 mol or 6.022x10 to the power of 23 molecules

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3
Q

What exactly is 1 Mole?

A

The molar mass (in grams) of a substance

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4
Q

What is an element’s molar mass?

A

The quantity in grams equal to its atomic weight

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5
Q

How do you determine the molar mass of an element?

A

Look up the amu of the element in the periodic table - add grams

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6
Q

What is the overall molar mass of a molecule called?

A

Molecular mass in grams

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7
Q

What are solutions?

A

Homogeneous mixtures of two or more substance

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8
Q

What is a solute?

A

The substance being dissolved

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9
Q

What is a solvent?

A

The substance doing the dissolving

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10
Q

What will polar molecules dissolve in?

A

Polar liquids

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11
Q

Give an example of a polar liquid.

A

Water

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12
Q

What will nonpolar solutes dissolve in?

A

Nonpolar solvents

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13
Q

What is a dilute solution?

A

A solution that contains relatively little solute in a large quantity of solvent

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14
Q

What is a concentrated solution?

A

A solution that contains a relatively large amount of solute in a given quantity of solvent

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15
Q

What is a saturated solution?

A

A solution that contains the maximum amount of solute that can be dissolved in a particular quantity of solvent at equilibrium at a given temperature

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16
Q

What are the three different solution concentrations?

A

Weight/weight solutions

Weight/volume solution

Volume/volume solution

17
Q

What are the two parts solutions?

A

Parts per million (ppm)

Parts per billion (ppb)

18
Q

What is 1 ppm of a litre?

A

1mg/L

19
Q

What is molarity?

A

An expression of the concentration of a solution in moles of solute per litre of solution

20
Q

What is the equation for molarity?

A

Moles of solution/L of solution

21
Q

What is dilution?

A

The process of adding solvent usually water, to lower the concentration of a solution

22
Q

What is a stock solution?

A

A concentrated solution that can be used to prepare more dilute solutions

23
Q

What is the dilution calculation formula?

A

C1 x V1 = C2 x V2

C1 = initial concentration (mol dm-3)
V1 = initial volume (cm3)
C2 = final concentration
V2 = final volume
24
Q

What is cm3 equal to?

A

ml

25
Q

What is mol dm-3 equal to?

A

Moles per litre = M

26
Q

What is serial dilution?

A

Successive dilutions for large scale dilutions in steps

27
Q

What is a dilution factor?

A

The factor by which the stock solution is diluted

1.1 Chemistry (19 decks)

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