One method for preparing hydrogen gas is to pass HCl gas over hot aluminium: the other product of the reaction is AlCl3. If you wanted to use this reaction to fill a balloon with a volume of 28.500 L at sea level and a temperature of 25.5°C, what mass of aluminium would you need? What volume of HCl at STP would you need?

Q: A mixture containing 0.765 mol He(g), 0.330 mol Ne(g), and 0.110 mol Ar(g) is confined in a 10.00-L…

A: Given  No. Of moles of He = 0.765 mol No. Of moles of Ne = 0.330 mol No. Of moles of Ar = 0.110 mol…

Q: An empty flask has a mass of 47.392 g and 47.816 g when filled with acetone vapor at 100.oC and 745…

A:

Q: Consider the chemical reaction: 2 H2O(l) --------> 2 H2(g) + O2(g) What mass of H2O is required…

A: The moles of O2 can be determined by using the ideal gas equation as:  PV=nRT…

Q: 10.113 Consider the following gases, all at STP: Ne, SF6, N2, CH4. (a) Which gas is most likely to…

A: (a)SF6 is the largest molecule among the given gases and it deviates from the assumption that there…

Q: The following combustion reaction is done with 0.225 g of ethylene, C2H4. C2H4 (g)  + 3 O2 (g)  → 2…

A: Number of moles of ethene and carbondioxide can be calculated as follows:

Q: Calcium carbide reacts with water to produce acetylene gas according to the following equation:…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: A gas mixture with a pressure of 1.31 atm is composed of 20.95g O, and 78.09g N2. What is the…

A: Given: Total pressure of gaseous mixture = 1.31 atm. Mass of O2 = 20.95 g. And mass of N2 = 78.09 g.…

Q: Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the…

A:

Q: Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following…

A: Given: The total pressure (Ptotal) is 754 mm Hg The vapor pressure of water PH2O is 23.8 mm Hg The…

Q: Atmospheric pressure on the peak of Mt Everest can be as low as 150 torr, which is why climbers need…

A: Boyles law :-  Pressure of fixed mass of a gas is inversely proportional to volume at constant…

Q: 4. When I was in Antarctica, we celebrated the turn of the new millennium with a party. We blew up…

A: It is given that the initial temperature of filling the balloons is 19°C (292.15 K) with the initial…

Q: A high altitude balloon is filled with 1.41 x 104 L of helium gas at temperature of 21 oC and 1.00…

A: For part a): According to Ideal gas equation: PV=nRT 1 x1.41 x 104 =n x 0.0820 x (273+21)…

Q: 1. Chorine is widely used to purify municipal supplies water and to treat swimming pool waters.…

A: We are authorised to solve only first three subparts of a question. Please post rest of the subparts…

Q: A certain laser uses a gas mixture made up of 9.00 g HCl, 2.00 g H2 and 165.0 g of Ne. What pressure…

A: Given, Mass of HCl = 9.00 g Mass of H2 = 2.00 g Mass of Ne = 165.0 g Volume, V = 75.0 L Temperature,…

Q: When natural gas is heated to 375°C, the sulfur it contains is converted to hydrogen sulfide. The…

A: Recall the given reaction,                                    H2S g  +  2 NaOH s  →  Na2S s  +  2…

Q: Both Jacques Charles and Joseph Louis Guy-Lussac were avidballoonists. In his original flight in…

A: Given, T = 220C V = 31,150 L

Q: Ethane burns in air to give H20 and CO2. 2 C2 H6 (g) + 7 O2 (g) 4 CO2 (g) + 6 H2O(g) a. What volume…

A:

Q: Aluminum reacts with aqueous sodium hydroxide to produce hydrogen gas according to the following…

A:

Q: Water can be decomposed by electrolysis into hydrogen gas and oxygen gas as shown in the balanced…

A: The reaction given is 2 H2O(ℓ) → 2 H2(g) + O2(g) Hence from the above reaction we can see that 2…

Q: Consider the following gases: H2 (1 atm, 200oC)          O2 (20 atm, 200o)       SO2 (20 atm, 200o)…

A: Given gases are  H2 (1 atm, 200oC)       O2 (20 atm, 200o)       SO2 (20 atm, 200o)   NH3 (20atm,…

Q: How many grams of water are produced from the combustion of 56 L CH4 at STP

A: The amount of water forming in combustion of methane can be calculate by using stoichiometric…

Q: An acetylene tank, C,H, is used for an oxyacetylene welding torch that undergoes a combustion with…

A: Answers are explained below. a) Balanced chemical equation for the the given problem is: C2H2(g)…

Q: Chlorine is widely used to purify municipal water suppliesand to treat swimming pool waters. Suppose…

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

Q: Aluminum reacts with chlorine gas to form aluminum chloride. 2Al(s)+3Cl2(g)→2AlCl3(s) What minimum…

A: Given data :

Q: A person accidentally swallows a drop of liquid oxygen, O2 (l), which has a density of 1.149 g/mL.…

A: Given: The density of oxygen=1.149g/mL The Volume of oxygen=0.050mL Calculate the mass of the drop…

Q: Consider three 1-L flasks each containing a gas at STP. Flask A contains NH3 gas, flask B contains…

A: The ideal gas equation is as follows,                                                    P V = n R T…

Q: For # 9 which equation do I use? If I need to rearrange it explain how.

A: Given,Temperature = 25 oCThe average velocity of hydrogen molecule = 1.92 × 103 m/s

Q: The flame produced by the burner of a gas (propane) grill is a pale blue color when enough air mixes…

A:

Q: What mass of helium gas is needed to pressurize a 82.0L tank to 249 atm at 23°C? What mass of oxygen…

A:

Q: Calcium carbide reacts with water to produce acetylene gas according to the following equation…

A: The given reaction is shown below.

Q: Aluminum reacts with aqueous sodium hydroxide to produce hydrogen gas according to the following…

A:

Q: 87.23 grams of a gas occupies 45 L at 600 mm Hg and 25 C. What is the molar mass of the gas ?

A:

Q: Iron oxide, FeO2, is produced by the reaction Fe + O2 ® FeO2 (87.8 g/mol). How many grams of FeO2…

A:

Q: The air bags in automobiles were once inflated by nitrogen gas generated by the rapid decomposition…

A:

Q: In a common Freshman College Laboratory experiment, KClO3 is decomposed by heating to give KCl and…

A: 2 KClO3 ---> 2 KCl + 3O2  Volume of O2 = 0.238 L  Temperature = 28°C  Pressure = 752 mm Hg 760 mm…

Q: During the smelting of iron, carbon reacts with oxygen to produce carbon monoxide, which then reacts…

A: The balanced reaction taking place is given as, => 3 CO (g) + Fe2O3 (s) → 2 Fe (s) + 3 CO2 (g)…

Q: 1.When 0.690 g of an unknown gas are held in an otherwise-empty 285-mL container, the pressure is…

A:

Q: Silane, SiH4, reacts with 02 to give silicon dioxide and water: SH4 (g) + 2 O2(g)  SiO2 (S) + H2O…

A: Given: Pressure of SiH4 gas = 356 mmHg = 0.4684 atm Volume of SiH4 gas = 5.20 L Pressure of O2 gas =…

Q: both questions please

A: 1)The balance chemical equation as follows:

Q: 4. Hydrogen gas (a potential future fuel) can be formed by the reaction of methane with water…

A: Given: Volume of methane = 25.5 L Pressure of methane gas = 732 torr = 0.96316 atm temperature of…

Q: The apparatus shown here has two gas-filled containers andone empty container, all attached to a…

A: In table, shown below, the number of blue particle in the first container and the number of red…

Q: Silane, SiH4, reacts with O2 to give silicon dioxide and water: SiH4(g) + 2 O2(g) → SiO2(s) + 2…

A: An Ideal gas- PV = nRT

Q: Consider the following gases, all at STP: Ne, SF6, N2, CH4.(a) Which gas is most likely to depart…

A: (a)SF6 is the largest molecule among the given gases and it deviates from the assumption that there…

Q: At 450 mm Hg and 85oC, a sample of carbon monoxide gas occupies a volume of 0.250 L. The gas is…

A: Given, P1 = 450 mm Hg = 0.59 atm P2 = ? V1 = 0.250 Litre V2 = 2.00 Litre T1 = 85 + 273 = 358…

Q: Zinc metal reacts with excess hydrochloric acid to produce hydrogen gas according to the following…

A:

Q: 3. What is the temperature of 1.2 moles of Helium gas at 1950 mm Hg if it occupies 15,500 ml of…

A: Combine Gas law of ideal gas -PV = nRTwhou volume of n mol of gas is V at pressure P andtemperature…

Q: Calcium hydride reacts with water to produce hydrogen gas according to the following reaction:…

A: Total pressure = 2 atm Temperature = 25 degree Celsius = 298 K Volume = 1000 L No of mole of…

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.