Questions 1. (a) The pressure of hydrogen gas in the eudiometer is not exactly equal to the atmospheric pressure you recorded. This is because (1) the hydrogen gas you collected contains a small amount of water vapor that exerts pressure and (2) the liquid left in the eudiometer is exerting a downward pressure due to its weight. So it reality, the pressure of the hydrogen gas is slightly less than atmospheric pressure. What does this mean about your final answer? Choose one answer below and explain. The molar mass I calculated for Mg will be slightly higher than the true value The molar mass I calculated for Mg will be slightly lower than the true value Explain your reasoning:

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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.