In the balance equation for 4HF + Si - SiF4 + 2H2, 56g of Si combined with 35g of hydrogen gas in the reaction vessel. A. How many moles of SiF4 are formed from Si? B. What is the limiting reactant? C. How many moles of the excess reactant are left?

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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.