Step 2: Prepare Aqueous Copper (II) Chloride (Trial 1) 0.10g
3.05 ZERO
0.019
+
Target Weight: 2.50g CuCl2
Using a spatula and a balance, measure 2.50 g copper(II) chloride (CuCl2). You may need to add
and subtract to get exactly 2.50 g.
5) Intro

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.

This is a solution, hope i could

Answer is: hydrogen is being oxidized.chemical reaction: co₂ + h₂ → co + h₂o.oxidation half reaction: h₂ → 2h⁺ + 2e⁻.reduction half reaction: c⁺⁴ + 2e⁻ → c⁺².oxidation is increase of oxidation number, hydrogen change oxidation number from neutral charge (in molecule of hydrogen) to oxidation number +1 (in water).

The answer is:   [d]:   "ultraviolet" {"  uv  "} .