Stoichiometry

Question 1

relative atomic mass

Answer 1

weighted average mass of the naturally occurring isotopes of an element relative to 1/12 the mass of Carbon-12.

Question 2

relative molecular mass

Answer 2

the weighted average mass of a molecule relative to 1/12 the mass of 12C. Mr is the sum of Ar atoms in a molecule

Question 3

calculating percentage comp by mass

Answer 3

molar mass x mol of x/ molar mass of compound

Question 4

molecular formula vs empirical formula

Answer 4

molecular = actual no of atoms in comp, emp = lowest whole no. ratio of atoms in comp

Question 5

Boyle’s Law

Answer 5

V is inversely proportional to P