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Chemistry > Topic 5 - Formulae, Equations and Amounts > Flashcards

Topic 5 - Formulae, Equations and Amounts Flashcards

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1
Q

Define molar mass

A

The mass per mole of a substance in gmol-1

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2
Q

What is the ideal gas equation?

A

PV = nRT

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3
Q

How would you calculate the number of moles in a gas given the volume, V, in dm^3?

A

V/24

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4
Q

Give two examples of sources of random error

A

Effect of variable atmospheric pressure and temperature on volume
Effect of temperature, draughts or condensation on precise measurements

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5
Q

Give three examples of sources of systematic error

A

Manufacturing errors in equipment markings
Manufacturing errors in equipment sizes/diameters
Manufacturing errors in volumes of liquid in thermometers

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6
Q

Give the equation for atom economy

A

Atom economy=Molar mass of desired product /

Molar mass of all products

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Chemistry (19 decks)

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