- What is 20 divided by 2?

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What fraction of an inch .185? What is the molarity of 2.5 mil kcl in 1.0 L of solutuon? If 5 cards are drawn from a deck, find the probability that 2 will be hearts.? How big is the resistance R1? Rtop=4 Ohm? Compound containing C & H is combusted. From a 20.0 gram of compound 67.5 g of CO2 & 13.8 g of H2O are obtained. What is empirical formula?