A student wanted to make large alum crystals, larger than what was made in the lab. Her goal was to make a crystal with a mass of 100.0 grams. Assuming the percent yield of the process 75.00 %, what mass (in grams) of aluminum should she start with? Do not typed units into your answer.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.