Form 4 Chemistry

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Questions and Answers

Number of mole = mass of substance ______ molar mass

divided by

Number of mole = volume of gas molar ______

volume

Molar mass = RAM/RMM/RFM in ______

gram

Molar volume = 24dm3 at room ______

<p>temperature</p> Signup and view all the answers

Number of particles 1 ONE-SCHOOL.NET Chemical Formula ______

<p>Cation</p> Signup and view all the answers

Flashcards

Mole calculation formula

Number of moles equals the mass of a substance divided by its molar mass.

Moles and volume of a gas

Number of moles is calculated using the gas volume divided by the molar volume.

Molar mass unit?

Molar mass is measured in grams.

Molar volume

The molar volume of a gas is typically 24 dm³ at room temperature.

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Mole and particles

The number of particles in a chemical formula is related to the numbers in the formula itself.

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Study Notes

Mole Calculations

  • Number of moles = mass of substance ÷ molar mass
  • Number of moles = volume of gas ÷ molar volume

Molar Quantities

  • Molar mass = RAM/RMM/RFM in grams per mole (g/mol)
  • Molar volume = 24dm3 at room temperature and pressure (RTP)

Particles and Formula

  • Number of particles in 1 mole = 6.022 x 10^23 (Avogadro's number)
  • Chemical Formula: a way to represent the composition of a compound using element symbols and numbers

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