Amount of substance definitions Flashcards
1
Q
Define relative atomic mass
A
Is the weighted average mass of an atom of an element compared to a twelfth of a carbon 12 isotope
2
Q
State Avogadro’s constant
A
6.022 x 10^23
3
Q
How much do you divide by when wanting to get to cm^3 to m^3
A
1,000,000
4
Q
Define uncertainty/ error
A
Is half of the smallest measurement you can take with that piece of measuring equipment
5
Q
How do you calculate percentage uncertainty?
A
Percentage uncertainty = (uncertainty / reading taken) x 100
6
Q
Define empirical formula
A
The simplest whole number ratio of the atoms of each element in each compound
