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General Chemistry > Chapter 3 > Flashcards

Chapter 3 Flashcards

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1
Q

aqueous solution

A

solution for which water is the solvent

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2
Q

Avogadro’s number (NA)

A

experimentally determined value of the number of entities comprising 1 mole of substance, equal to 6.022 x 10^23 mol^-1

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3
Q

concentrated

A

qualitative term for a solution containing solute at a relatively high concentration

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4
Q

concentration

A

quantitative measure of the relative amounts of solute and solvent present in a solution

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5
Q

dilute

A

qualitative term for a solution containing solute at a relatively low concentration

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6
Q

dilution

A

process of adding solvent to a solution in order to lower the concentration

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7
Q

dissolved

A

describes the process by which solute components are dispersed in a solvent

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8
Q

empirical formula mass

A

sum of average atomic masses for all atoms represented in an empirical formula

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9
Q

formula mass

A

sum of the average masses for all atoms represented in a chemical formula; for covalent compounds, this is also the molecular mass

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10
Q

mass percentage

A

ratio of solute-to-solution mass expressed as a percentage

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11
Q

molar mass

A

mass in grams of 1 mole of substance

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12
Q

molarity (M)

A

unit of concentration, defined as the number of moles of solute dissolved in 1 liter of solution

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13
Q

mole

A

amount of substance containing the same number of atoms, molecules, ions, or other entities as the number of atoms in exactly 12 grams of carbon-12

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14
Q

parts per billion (ppb)

A

ratio of solute-to-solution mass multiplied by 10^9

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15
Q

parts per million (ppm)

A

ratio of solute-to-solution mass multiplied by 10^6

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16
Q

percent composition

A

percentage by mass of the various elements in a compound

17
Q

solute

A

solution component present in a concentration less than that of the solvent

18
Q

solvent

A

solution component present in a concentration that is higher relevant to other components

19
Q

volume percentage

A

ratio of solute-to-solution volume expressed as a percentage

General Chemistry (8 decks)

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