Atoms & molecules test [30 points] Honors Chem

For problems involving calculations, show the relevant equation (or formula and conversion factor(s)), show your work in an organized manner.

1. fill-in the table. [10 points]

symbol	# protons	# neutrons	# electrons	charge	Atomic mass
65Cu 2+
	47			+ 1	110

2. fill-in the table. [10 points]

Chemical name	Chemical formula
	Fe(OH)3
Barium nitrate
	P3Cl 8
Ammonium sulfate
	S4Br6

3. A hypothetical sample of carbon contains 75.0 % ¹²C, 10.0 % ¹³C, and an unknown amount of ¹⁴C. Based on this information, determine the average atomic mass of carbon. [10 points]