When percentages are given, assume that the total mass is 100 grams to determine the mass of each element in grams. (mass % = mass). Then, using the molar masses of each element, convert grams to moles (mass → moles). The unknown compound is 4.8% H by mass. How many moles of hydrogen does a 100.0 gram sample of the unknown compound contain? (I am lost please help me!)

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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.