Answer:
its atomic number will be 3 and it's mass number will be 7. it is lithium
They are arranged by their atomic mass.
Answer:
2M
Explanation:
M=mol/L
1. Find moles of CoCl2
mass of substance/molar mass = 130/129.833 = 1.001 mol
3. Substitute in molarity equation
M=(1.001/0.5)
M= around 2M
