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Chemistry calculations Knowledge Organiser (RGSHW)2025-2026

Last updated 20 days ago

25 Nsɛmmisa

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Asemmisa {{asɛmmisaAhyɛnsode}}

1.

What is the relative atomic mass (ram or Ar)?

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2.

In a balanced chemical equation, how is mass conserved?

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3.

What is the relative formula mass (rfm or Mr) of a molecule?

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4.

What does the law of Conservation of Mass state?

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5.

In the example of 2 Na + Cl₂ → 2 NaCl, how is mass conserved?

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6.

What can lead to a perceived loss in mass during a reaction?

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7.

What is a mole and what is the Avogadro constant?

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8.

How can chemical equations be interpreted in terms of moles?

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9.

What is a limiting reagent?

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10.

What is the concentration of a solution?

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11.

What are titrations used for?

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12.

How do you convert cm³ to dm³?

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13.

What is the volume of one mole of any gas at RTP?

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14.

What is atom economy?

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15.

Why do reactions not always go to completion in reality?

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16.

What is the percentage yield of a chemical reaction?

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17.

Write the first triangle as a formula: moles =

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18.

Write the 2nd triangle as a formula: particles =

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19.

Write the 3rd triangle as a formula concentration =

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20.

Write the 4th triangle as a formula concentration =

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21.

How do you convert from mol / dm³ to g/dm³?

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22.

How do you convert from g/dm³ to mol/dm³?

Asemmisa {{asɛmmisaAhyɛnsode}}

23.

How do you convert from mol / dm³ to g/dm³?

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24.

Write out the formula for % Yield =

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25.

Write out the formula for % atom economy =