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Flashcards in Amount of substance Deck (13)
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1

Define relative molecular mass

Average mass of the naturally occurring isotopes of a compound, compared to 1/12 mass of an atom of carbon12

2

Define relative atomic mass

Average mass of the naturally occurring isotopes of an atom, compared to 1/12 mass of an atom of carbon12

3

Define Avogadro constant

Number of particles/atoms/ions in one mole of a substance

4

Write the mole equation

n= m/Mr

5

Define percentage yield

The % of a product produced by a reaction, compared to a theoretical maximum

6

How do you calculate percentage yield

Mass of useful products / theoretical mass of products

7

What can % yield be used to investigate

Efficiency is a practical technique

8

Define atom economy

% of amount of reactants made into the desired product

9

How do you calculate atom economy

Mr of atoms of useful product /
Mr of atoms of all products

10

Ideal gas equation

PV=nRT

Pa. m3. K. R=8.31

11

How do you convert between k and C

C to k +273

K to C -273

12

Define empirical formula

Simplest whole number ratio of atoms in compound

13

Concentration equation

C = n / V