Amount of Substance & Gas Volume (AQA GCSE Chemistry): Flashcards

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Amount of Substance in Relation to Volumes of Gases
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Molar gas volume at RTP

24 dm³

Temp for molar gas vol of 24 dm³

20°C (room temp)

Pressure for molar gas vol of 24 dm³

1 atm (standard)

Formula: gas vol from moles (dm³)

Volume=Moles×24Volume = Moles \times 24

Convert dm³ to cm³ (multiply by?)

1,000

Formula: moles from mass

Moles=massMrMoles = \frac{mass}{M_r}

MrM_r of NH3NH_3

17

MrM_r of Zn

65

Molar gas vol in cm³

24,000 cm³

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