You want to prepare 1 L of a solution containing 1.00 ppm of Fe+2. How many grams of iron (II) and ammonium sulfate, FeSO4 (NH4) 2SO4 6H2O, must be dissolved and diluted in 1 L? What would be the molarity of this solution?

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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.

im doing test rn im going with 2 but ill give answer if itss wrong,   : )