Liquid A has 10 grams of element X per liter. Liquid B has 15 milligrams of element Y per cm3 (there are 1000 milligrams in a gram and 1000 cm3 in a liter). It is desired to make 150 grams of molecule Z. To make 18 grams of Z requires 2 grams of X and 16 grams of Y. How many liters of each liquid should be used?

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.