Molecular Formula and Empirical Formula + Relative Molecular Mass and Relative Formula Mass Flashcards

1
Q

What is the molecular formula?

A

= tells us the elements in a molecule
= and the number of atoms of each element.

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2
Q

What is the relative molecular mass?

A

= weighted mean mass of a molecule compared to 1/12th of the mass to carbon-12.
Mr.
= used for covalent molecules

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3
Q

How do we calculate it?

A

= add up all of the relative atomic masses of the atoms in a molecule
= do not use big numbers
= relative molecular mass applies to 1 molecule

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4
Q

What is relative formula mass?

A

= giant structures
= calculated the same way as relative molecular mass
= use emperical formula

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