<span>A chemical change has occurred creating a precipitate.
Just had that question on a quiz. XP
Hope I helped :)</span>
Answer:
Atomic number = 16, Atomic mass = 34, Net charge= +3
Explanation:
i) Atomic number = Proton number = 16
ii) Atomic mass = Proton number + Neutron number
= 16 + 18 = 34
iii) Net charge= Proton number = Electron number (when element is in ground state or unreacted state)
But, proton number (16) is not the same as electron number (13), this means the element has lost 3 electrons
Thereore, the net charge is = 16-13
= +3
A-copper chromate oxide ionic I think
B-barium nitrate ionic
C-chlorine monoxide ionic
D- Bromine pentafluoride covalent
Answer: 0.337 mol Ca
Explanation: 13.5 g Ca ÷ (40.1 g/mol Ca) =
