4. A student observed that 0.234 grams of a metal produced 92.2 mL of wet hydrogen gas measured with an eudiometer at 27°C and barometric pressure of 746.7 torr. The pressure due to the column of water was 24.6 mm Hg. Calculate the equivalent weight of the metal as measured in this experiment. The vapor pressure of water at 27°C is 26.7 torr.

Q: What is the mole fraction of nitrogen in a mixture of Ar, N2, and He in which the partial pressure…

A:

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: Answer: Volume of CO2 will be calculated using ideal gas equation which is shown below: PV=nRTV=nRTP…

Q: 40.0 mL of a 3.79 M solution of H2O2 decomposes according to this reaction: 2 H2O2 (aq) → 2 H20(1) +…

A: The reaction taking place is given as, => 2 H2O2 (aq) ------> 2 H2O (l) + O2 (g)  Given :…

Q: The vapor pressure of mercury at 20 oC is 1.7 x 10-6 atm. Your lab partner breaks a mercury…

A: Given temperature, T = 20 oC + 273.15 = 293.15 K  Pressure, P = 1.7*10-6 atm  1 atm = 101325 Pa or…

Q: A certain mass of nitrogen gas occupies a volume of 1.04 L at a pressure of 8.49 atm. At what…

A:

Q: The pressure of a sample of argon gas was increased from 1.86 atm to 6.70 atm at constant…

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Q: When zinc metal is added to hydrochloric acid, the following reaction takes place Zn(s) + 2 HCl(aq)…

A:

Q: A 5.50-mole sample of NH3 gas is kept in a 1.85-L container at 309 K. If the van der Waals equation…

A:

Q: A 0.564 g sample of a metal, M, reacts completely with sulfuric acid according to M(s) + H,SO,(aq)…

A: The balanced reaction taking place is given as, Given: Mass of M reacting = 0.564 g. Volume of H2…

Q: A student experimentally determines the gas law constant, R, by reacting a small piece of magnesium…

A:

Q: A 0.640 g sample of a metal, M, reacts completely with sulfuric acid according to M(s) + H,SO,(aq) –…

A: As per equation 1 mol of metal M  gives 1 mol of H2 gas  First find the moles of H2 gas by using…

Q: Gases produced by a chemical reaction can easily be collected over water. To determine the pressure…

A: To determine the pressure of the hydrogen gas formed in this reaction, we need to subtract the vapor…

Q: A student collected 26.86 mL of H2 over water at 20.00 °C. The water level inside the collection…

A: Volume of gas V = 26.86 mL = 0.02686 L Temperature T1 = 20.00 °C = 20.00 + 273 K = 293 K  Barometric…

Q: 1) Convert a pressure of 2.18 atm to kPa. Answer in units of kPa. Convert the pressure of 2.18 atm…

A: Since you asked for multiple questions, we are entitled to solve first question only.

Q: Tochloric acid, the following tion takes place s) + 2 HCI(aq) → ZNCI2(aq) 1) culate the volume of H2…

A: Given, Temperature  =30 °c = 303 K Mass of Zn = 65.7 g Moles of Zn = mass/Molar mass      =…

Q: sample of oxygen gas was collected by displacement of water in gas collection apparatus. The total…

A: Here we have to use Daltons law- Ptotal=Pwater+Poxygen It is given vapor pressure of water is 22.6…

Q: A 0.3400 g piece of brass is allowed to react with hydrochloric acid at the base of eudiometer. The…

A: When brass is reacted with hydrochloric acid, only zinc reacts with hydrochloric acid.  The reaction…

Q: 4. If your laboratory conditions were 743.4 torr and the volume of your apparatus was 165.5 mL,…

A:

Q: A 0.235 g sample of a metal, M, reacts completely with sulfuric acid according to M(s) + H₂SO4 (aq)…

A:

Q: A sample of solid potassium chlorate was heated in a test tube and decomposed into potassium…

A:

Q: A 0.0665 g sample of aluminum metal reacts with hydrochloric acid to give 90.5 mL of hydrogen gas at…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A metal cylinder with a capacity of 6.0 L is filled with compressed propane (C3H8). The pressure and…

A: Given: Volume = 6.0 L Initial pressure of cylinder = 120 atm Initial temperature of cylinder =  75…

Q: When 0.681 g of zinc was added to 75.0 mL of 0.3 M hydrochloric acid, hydrogen gas was produced. For…

A:

Q: Hydrogen gas is collected over water at 23.5 °C and an atmospheric pressure of 765 mmHg. Calculate…

A: Hydrogen gas is collected over water at 23.5 °C and an atmospheric pressure of 765 mm Hg. Calculate…

Q: 0.0500 grams of zinc metal reacted in excess HCl(aq) in a gas tube and produced hydrogen gas that…

A: Given: The mass of Zn is 0.0500 g. The vapor pressure of water is 23.8 mmHg. Barometric pressure is…

Q: Ozzie wanted to do another experiment with a stronger H2O2 solution to check accuracy of the…

A: Given, For H2O2 solution, Concentration of H2O2 solution = 3.18 M = 3.18 mol/L Volume of H2O2…

Q: oxygen gas from the decomposition of KClO3 was collected by water displacement. the barometric…

A: The objective of this question is to calculate the partial pressure of oxygen collected in an…

Q: The volume of a sample of pure HCl gas was 289 mL at 24 ° C and 137 mmHg. It was completely…

A: The number of moles of HCl is calculated as,

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: Given,          Vapor pressure of water = 23.8 mmHg          Total vapor pressure = 911 mmHg…

Q: Liquified petroleum gas (LPG) is propane stored under sufficient pressure to liquify it. When a tank…

A: The effect of pressure and temperature is measured by Boyle’s law and Charles's law respectively.…

Q: 8. For the reaction 2H₂O(1) + 2e → H₂(g) + 2OH(aq), calculate the volume of "dry" hydrogen gas…

A:

Q: A 2.00 L reaction container at 25.0 °C contains CO2 (g) and O2 (g). The total pressure of the gases…

A: The partial pressure (p) of a gas is related to the total pressure (Pt) of the gas by the mole…

Q: A piece of magnesium reacts with an aqueous solution of HCl to produce H2 gas. The hydrogen gas is…

A: The ideal gas equation is shown below: PV = nRT Where; P = pressure of the gas V= volume of the gas…

Q: The molar mass of a gas is determined as in the experiment described in Experiment 8. The mass is…

A: Given, the mass of gas =2.01 gvolume of gas =243 mL =0.243 Ltemperature =99.8 °C =(99.8+273.15) K…

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: The reaction is given as, CaCO3 + 2 HCl →CaCl2 + H2O + CO2

Q: What is the experimental molar mass (that is, calculated from the data given and not taken from the…

A: a). Pressure ( P ) = 727.5 torr = ( 727.5 / 760 ) atm = 0.957237 atm Temperature ( T ) = 22.2 °C =…

Q: A 1,365.8 mL aqueous solution of 407.9 mM Na2S is combined with 100.0 mL of an aqueous HCl solution…

A: Given , Na2S reacts with HCI

Q: In an experiment, a sample of zinc metal was added to excess hydrochloric acid and the evolved…

A:

Q: In deep sea diving the composition of air a diver breathes must be changed in accordance with the…

A: Given that : % of oxygen in the air = 20% The partial pressure of oxygen in air = 0.20 atm Total…

Q: You collected 44.1 mL of hydrogen gas in a eudiometer following the procedure outlined in this…

A:

Q: When zinc metal is added to hydrochloric acid, the following reaction takes place Zn(s) + 2 HCl(aq)…

A: Given,The reaction:Zn(s) + 2 HCl(aq) → ZnCl₂(aq) + H₂(g)mass of Zn = 71.9 gThe total vapor pressure…

Q: When solid calcium carbonate is reacted with aqueous hydrochloric acid, the products of the reaction…

A: Given that -  Temperature = 25°C = 298 K  Mass of calcium carbonate = 25.1 g  Total pressure = 911.0…

Q: A sample of hydrogen (H2) gas was collected over water at 60°C. If the total volume of gas…

A:

Q: in the following reaction, 27.1 mL of o2(g) is collected over water at 23*C and barometric pressure…

A:

Q: A 0.265 g sample of a metal, M, reacts completely with sulfuric acid according to M(s) + H,SO,(aq) →…

A: The combined gas legislation incorporates various gas laws such as the Boyle’s law, Charles' law,…

Q: .0380 of Mg strip reacted completely with 6 M HCL in the gas buret and 35.8 mL of hydrogen gas is…

A: Volume of hydrogen gas = 35.8 mL = 0.0358 L Mass of magnesium metal = 0.0380g Temperature = 200C =…

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.