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Flashcards in Calculation Points Deck (15):
1

Density equation

Density = mass/Vol

2

% yield

Actual yield/ theoretical yield X 100

3

Atom economy

Mass required products / total mass reactants X 100

4

What does high ATOM economy mean?

Nearly all or all the atoms of the reactants are in the desired product

5

Low atom economy?

Not many atoms in product

6

What is the atom economy if only one product produced?

100%

7

If there is a smaller mass or vol of a substance used in experiment what happens?

There's a smaller volume obtained in a titre leading to a larger percentage error

8

Why is it necessary to recrystallise a product before weighing it?

It purifies them so impurities are removed and only desired product is left- gives an accurate mass of product

9

Why is water a soluble solvent for recrystallisation?

It's soluble at high temps but insoluble at low temps

10

What is a double bond?

Unsaturated hydrocarbon

11

What is a single bond?

Saturated hydrocarbon

12

What does the m/z value in mass spec tell us?

The Mr

13

If there is a reaction involving carboxylic acid and identification of a structure- if the ratio is 1:1 what does this mean?

There will only be one carboxyl group

14

Conversion: Kg to grams

Times by 1000

15

Conversion: Kg to grams

Times by 1000