PH3
Also known as phosphine
If 1.2 L of solution contains 0.97 mol
then let 1 L of solution contain x mol
⇒ (1.2 L) x = (0.97 mol) (1 L)
x = (0.97 mol · L) ÷ (1.2 L)
x = 0.8083 mol
Thus the molarity of the Barium Chloride solution is 0.808 mol / L OR 0.808 mol/dm³.

Ore is a deposit in Earth's crust of one or more valuable minerals. The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, and iron. Copper ore is mined for a variety of industrial uses. Copper, an excellent conductor of electricity, is used as electrical wire.
Answer is D breaking apart I to not more than two