A reaction of 0.028 g of magnesium with excess hydrochloric acid generated 31.0 mL of gas. The gas was collected by water displacement in a 22°C water bath. The barometric pressure in the lab that day was 746 mmHg. A. Using Dalton's Law and the vapor pressure of water at the given temperature to calculate the partial pressure of hydrogen gas in the collection tube. 7 B. Use the combined gas law to calculate the corrected volume of hydrogen at STP. C. What is the theoretical number of moles of hydrogen that cạn be produced from 0.028 g of magnesium reacting with excess hydrochloric acid?

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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.