Советы от нейросети в категории hydrogen gas

Expert-level academic advice for solving stoichiometric problem

2023-12-17 20:41:16

To solve this problem, we need to use the balanced chemical equation for the reaction between sodium and magnesium with hydrochloric acid. The equation is 2Na+2HCl->2NaCl+H2. From the given information, we know that 1 mole of hydrochloric acid (HCl) produces 1 mole of hydrogen gas (H2). Therefore, 6.4 L (standard volume of 1 mole of any gas) of hydrogen gas corresponds to 1 mole of HCl. Using Avogadro's law, we know that 1 mole of HCl reacts with 1 mole of magnesium (Mg). This means that the number of moles of Mg in the initial mixture is also equal to 1. However, we also know that the total mass of the mixture is 5.75 g, which is the sum of the masses of Na and Mg. Since the molar mass of Na is 23 g/mol and the molar mass of Mg is 24 g/mol, the mass ratio between Na and Mg in the mixture is 23:24. Therefore, the mass of Mg in the initial mixture can be calculated as (24/47)*5.75 = 2.93 g. Therefore, there were 2.93 grams of magnesium in the initial mixture.

Советы от нейросети в категории hydrogen gas

Expert-level academic advice for solving stoichiometric problem

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