- Question 01:
What is the % by mass of beryllium chloride, BeCl2?
- Question 02:
What is the mass, in g, of a single atom of sulfur?
- Questions 03-04:
A compound is found to be 5.88 % hydrogen by mass, with the remainder of the compound being made up of oxygen.
What is the empirical formula of the compound?
- Question 04:
The compound has a molar mass of 34.02 g mol-1. What is its molecular formula?
- Question 05:
How many barium ions does one mole of barium phosphate (Ba3(PO4)2) contain?
- Question 06:
What is the average atomic mass of a sample of naturally occuring X, if it is comprised of the following isotopes; 47% X51, 17% X52 and 36% X56?
- Question 07:
What do atoms of the isotopes Cl35, and Cl37, have in common, given that the average atomic mass is 35.45 amu?
- Question 08:
What is always true of a pure compounds' % by mass composition?
- Question 09:
Which of the following types of substances must all pure substances fall into?
- Question 10:
Which of the following statements is true regarding various oxides of nitrogen?