Please help I need this ASAP! Will give Brainliest!! 1. What mass of precipitate is formed when 358 mL of 1.58 M CuNO3 is mixed with 491 mL of 0.87 M Ba(OH)2?

2.A titration is performed on a 25.0 mL sample of calcium hydroxide. A volume of
46.0 mL of a 0.15 M solution of nitric acid is used to reach to the end point.
Calculate the concentration of the calcium hydroxide.

ca has a crystalline lattice with positive ions (since it is a metal, metals are positively charged) and electrons flow freely in its structure since the ca atoms have a large nuclear radius so the electrons are not tightly held, therefore the electrons can flow freely since they are not being highly attracted by the nucleus. moreover, one of the properties of metals are that they are conductors of electricity, thus proving ca is the element.