It's defined as the salt concentration in sea water. Ex: Sodium and Chlorure
I believe the molecular geometry of PCL3 would be trigonal planar.
Answer:
5 mg
Explanation:
If one half life is 4 hours, then 3 half lives is 12 hours.
This means that the sample will decay to 1/8 of its original amount.
So, the answer is 40(1/8) = 5 mg.
Answer: 19.6%
Explanation: percent by mass =
100 × ((mass of solute (g)) ÷ (mass of solute + mass of solvent (g)))
100 × ((22.0gHCl) ÷ (22.0gHCl + 90.0gH20)) = 19.6%