3. Stoichiometry (part 1) Flashcards
1
Q
Define relative atomic mass (Aᵣ) [1]
A
The average mass of the isotopes of an element compared to 1/12th of the mass of an atom of ¹²C
2
Q
Define relative molecular mass (Mᵣ) [1]
A
The sum of the relative atomic masses
3
Q
What do the following state symbols stand for, s, l, g, aq? [4]
A
s = soild, l = liquid, g= gas, aq = aqueous
4
Q
What is the charge on an Ammonium ion
A
NH₄⁺
5
Q
What is the charge on a hydroxide ion
A
OH⁻
6
Q
What is the charge on a nitrate ion
A
NO₃⁻
7
Q
What is the charge on a sulfate ion
A
SO₄²⁻
8
Q
What is the charge on a carbonate ion
A
CO₃²⁻
