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Quantitive Chemistry > Definitions > Flashcards

Definitions Flashcards

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1
Q

How many particles are there in one mole?

A

6.02 x 10 to the power of 23

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2
Q

Empirical formula

A

gives the smallest whole number ratio of atoms of each element in a compound.

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3
Q

Molecular formula

A

the actual numbers of atoms of each type of element in a molecule.

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4
Q

Nitrate formula

A

NO3-

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5
Q

Hydroxide

A

OH-

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6
Q

CArbonate

A

CO3 2-

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7
Q

Sulfate

A

SO4 2-

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8
Q

Ammonia

A

NH4 +

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9
Q

Phosphate

A

PO4 3-

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10
Q

Displacement reaction

A

a more reactive element reacts to take the pace of a less reactive one.

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11
Q

Neutralisation reaction

A

When a base reacts with acids a salt and water are produced.

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12
Q

What is formed in neutralisation with carbonates

A

CO2

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13
Q

Precipitation reaction

A

if 2 aqueous compounds react together and one of the products forms a solid its a precipitation reaction.

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14
Q

Molar gas volume

A

the space one mole of gas occupies at a certain room temp and pressure.

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15
Q

Error

A

the difference between an experimental value and the correct value.

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16
Q

Precision

A

How close values are to each other. Any measurement will have uncertainty due to limitations within the sensitivity of the equipment. The uncertainty is half of the scale on the equipment.

17
Q

Accuracy

A

How close values are to the correct value.

18
Q

Atom economy

A

A measure of the proportion of reactant atoms that become part of the desired product in the balanced chemical equation.

19
Q

Percentage yield

A

The actual amount you collect written as a percentage of the theoretical yield.

20
Q

Theoretical yield

A

The mass of the product that should be made in a reaction if no chemicals are lost. The actual mass of the product is always less than the theoretical yield.

21
Q

Avogadros constant

A

The number of atoms of C12 in exactly 12 grams of C12

Quantitive Chemistry (3 decks)

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