Valence Electron because the more valence electrons an atom can contribute the shared pool, the stronger the metallic bonds will be
Percent error is an expression that is used as a tool for determining the precision of your calculations. It is calculated by the absolute value of the difference of experimental and theoretical values over the theoretical values multiplied by 100%. Hope this helps.
the answer is d. when more solute is added
Blue glass is colored blue because it will absorb the yellow and red light spectrum. The result should be only blue light reflected or pass through the glass. Cobalt glass is used to filter out the light made by sodium because sodium can produce a high-intensity light that could mask other metal.