Magnesium metal reacts with hydrochloric acid. At the end of the reaction there is a small amount of magnesium left at the bottom of the flask. Which of the reactants was the limiting reactant?

150 mL of hydrochloric acid of the same concentration is poured into each of two flasks (A and B).10 g of magnesium (Mg) is added to each flask.Bubbles of hydrogen gas are seen in each flask. The reaction in flask A stops sooner than in flask B.When the bubbling in both flasks stops, no solid magnesium is visible in either flask.Question promptWhat is the balanced chemical equation for this reaction?Question response areaSelect one optionMg + 2HClMgCl2 + H22Mg + 2HCl2MgCl + 2H2Mg + HClMgCl + H22Mg + 2HCl2MgCl + H2

Magnesium metal reacts with hydrochloric acid according to Reaction 1.Mg(s) + 2 HCl(aq) → MgCl2(aq) + H2(g)Reaction 1During an experiment to measure the molar enthalpy ΔH° of Reaction 1, a student placed 100. mL of dilute HCl(aq) into a coffee cup calorimeter, as shown in Figure 1.Figure 1  Coffee cup calorimeterAfter monitoring the solution temperature for 1 min, 0.486 g of Mg(s) was then added to the solution inside the calorimeter and stirred while continuing to monitor the temperature until the Mg(s) was completely consumed.  The results of the experiment are shown on the graph in Figure 2.Figure 2  Graph of temperature versus time during the reaction of magnesium with hydrochloric acidAccording to the first law of thermodynamics, the heat produced (or consumed) by a reaction qrxn must be equal to the heat transferred to (or taken from) the surroundings (ie, the solution and the calorimeter), as expressed by Equation 1.−qrxn = qsurroundings = qsolution + qcalorimeterEquation 1 Question 41Based on the results of the calorimetry experiment described in the passage, the magnitude of the molar enthalpy ΔH° for Reaction 1 (in kJ/mol Mg) is closest to which of the following?  (Note: Assume that the HCl(aq) has a density of 1.0 g/mL and a specific heat capacity of 4.0 J/(g∙°C), and that qcalorimeter ≈ 0.)A.8.84B.18.2C.442D.844

4. If 72.0 grams of aluminum are reacted with 252 grams of hydrochloric acid, what is the limiting reactant?2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g)AluminumHydrochloric acidAluminum chlorideHydrogen gas

Ex 1:Hydrochloric acid reacts with magnesium hydroxide to producewater and aqueous magnesium chloride. How much water isproduced if 20.0 g of hydrochloric acid reacts with 10.0 g ofmagnesium hydroxide? How much of the excess reactant is leftover?

Magnesium reacts with hydrochloric acid in a sealed container, as shown. The initial pressure inside the container is 1.20 atm and its volume is 100 mL. What is the pressure inside the container after 243 mg of magnesium has reacted? (Note: Assume the reaction is isothermal and the gas behaves ideally.) Mg(s) + 2HCl(aq) → MgCl2(s) + H2(g) A.1.4 atmB.2.4 atmC.3.6 at