chair. Snape thinks it's time for a harder problem. How many milligrams of magnesium reacts withexcess HCl to produce 31.2 mL of hydrogen gas at 754 Torr and 25.0°C. The hydrogen is producedby the following reaction:Mg(s) + 2HCI(aq) → MgCl2(aq) + H2(g)Express your answer in milligrams.

Answered: Image /qna-images/answer/f68ef974-ae8a-4bbd-8d1b-db8f4e5b167b.jpg

Answered: . How many milligrams of magnesium reac

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter5: Gases

Section: Chapter Questions

Problem 5.99PAE: 99 Pure gaseous nitrogen dioxide (NO2) cannot be obtained, because NO2dimerizes, or combines with...

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Similar questions

A 1.26-g sample of a gas occupies a volume of 544 mL at 27 C and 744 torr? What is the molecular formula and name of the gas if its empirical formula is C2H5.
99 Pure gaseous nitrogen dioxide (NO2) cannot be obtained, because NO2dimerizes, or combines with itself, to produce a mixture of NO2 and N2O4. A particular mixture of NO2, and N2O4 has a density of 2.39 g/L at 50°C and 745 torr. What is the partial pressure of NO2 in this mixture?
Automobile air bags are inflated with nitrogen gas, which is formed by the decomposition of solid sodium azide (NaN3). The other product is sodium metal. Calculate the volume of nitrogen gas at 27 C and 756 torr formed by the decomposition of 125 g of sodium azide.
N2O is a gas commonly used to help sedate patients in medicine and dentistry due to its mild anesthetic and analgesic properties; it is also nonflammable. If a cylinder of N2O is at 10.5 atm and has a volume of 5.00 L at 2911 K, how many moles of N2O gas are present? The gas from the cylinder is emptied into a large balloon at 745 torr. What is the volume of the balloon at 298 K?
A chemist weighed out 5.14 g of a mixture containing unknown amounts of BaO(s) and CaO(s) and placed the sample in a 1.50-L flask containing CO2(g) at 30.0C and 750. torr. After the reaction to form BaCO3(s) and CaCO3(s) was completed, the pressure of CO2(g) remaining was 230. torr. Calculate the mass percentages of CaO(s) and BaO(s) in the mixture.
88 Liquid oxygen for use as a rocket fuel can be produced by cooling dry air to 183°C, where the O2 condenses. How many liters of dry air at 25°C and 750 torr would need to be processed to produce 150 L of liquid O2 at 183°C? (The mole fraction of oxygen in dry air is 0.21, and the density of liquid oxygen is 1.14g/mL.)
The oxides of Group 2A metals (symbolized by M here) react with carbon dioxide according to the following reaction: MO(s)+CO2(g)MCO3(s) A 2.85-g sample containing only MgO and CuO is placed in a 3.00-L container. The container is filled with CO2 to a pressure of 740. torr at 20.C. After the reaction has gone to completion, the pressure inside the flask is 390. torr at 20.C. What is the mass percent of MgO in the mixture? Assume that only the MgO reacts with CO2.
A 19.9-mL volume of a hydrochloric acid solution reacts completely with a solid sample of magnesium carbonate, producing 183 mL of CO2 that is collected over water at 24.0C and 738 torr total pressure. The reaction is 2HCl(aq)+MgCO3(s)CO2(g)+H2O(l)+MgCl2(aq) What is the molarity of the HCl solution?
Silicon tetrachloride (SiCl4) and trichlorosilane (SiHCl3) are both starting materials for the production of electronics-grade silicon. Calculate the densities of pure SiCl4 and pure SiHCl4 vapor at 85C and 635 torr.
Consider the following unbalanced chemical equation: ^Sfr) + O2(g) —? Cu2O(s) + SO2(g) What volume of oxygen gas, measured at 27.5 °C and 0.998 atm. is required to react with 25 g of copper!I) sulfide? What volume of sulfur dioxide gas is produced under the same conditions?
50 The first step in processing zinc metal from its ore, ZnS, is to react it with O2 according to the reaction 2ZnS(s)+3O2(g)2ZnO(s)+2SO2(g) If 620 kg of ZnS is to be reacted, what volume of oxygen at 0.977 atm 34.0 C is needed (at a minimum) to carry out this reaction?

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