Zn (s) + H2SO4 (aq) --> H2 (g) + ZnSO4 (aq) You run a reaction and collect 166.3 mL of hydrogen gas from this reaction into a balloon. If the atmospheric pressure is 740.3 torr, and the temperature of the gas is 23.4°C, how many grams of Zn must have reacted.

Q: Calcium hydride, CaH2, reacts with water to form hydrogengas:CaH2(s) + 2 H2O(l)------>Ca(OH2)(aq)…

A: Since moles of H2 need to be generated can be calculated using PV = nRT where P = pressure in atm…

Q: When gaseous F₂ and solid I₂ are heated to high tempera-tures, the I₂ sublimes and gaseous iodine…

A: Given   The pressure of fluorine gas is 350 torr. The mass of solid iodine is 2.50 g. The volume of…

Q: Copper reacts with nitric acid according to the following equation. Cu(s)  +  4 HNO3(aq)  →…

A:

Q: You placed 6.35 g of a mixture containing unknown amounts of BaO(s) and MgO(s) in a 3.50-L flask…

A: Number of moles of CO2 in the flask initially is calculated using Ideal Gas equation as follows,1…

Q: Acetylene (CH2(g)) is an important fuel in welding. A sample is produccd in a laboratory by a…

A:

Q: What is the temperature of an 11.2-L sample of carbon monoxide, CO, at 744 torr if it occupies 13.3…

A: At constant pressure,  V1/T1 = V2/T2

Q: The combustion of octane, C8H18 , proceeds according to the reaction shown. 2C8H18(I) + 25 O2…

A: The number of moles of carbon dioxide, produced in the reaction, is calculated as shown below where…

Q: When heated, KClO3 decomposes to form KCl and oxygen gas according to the following equation: 2KCl03…

A:

Q: Given the following reaction, if 1.9 L of nitrogen completely react with an excess of oxygen, how…

A: 1 mole of a gas occupy  22.4 L of volume under standard temperature and pressure.

Q: When excess water is added to a mixture of citric acid and sodium bicarbonate present in a bath…

A:

Q: Gaseous ammonia and hydrogen chloride react to form solid ammonium chloride, NH3 (g) + HCI (g) →…

A: Calculate the excess moles of reactant,         Moles of NH3 = 3.00 g17.031 g/mol = 0.1761 molMoles…

Q: Given the following reaction, if 4.9 L of nitrogen completely react with an excess of oxygen, how…

A: The given reaction is, 2N2(g)+5O2(g)→2N2O5(g)

Q: The explosive, PETN, pentaerythritol tetranitrate, is one of the most powerful explosives known. It…

A:

Q: Oxygen gas reacts with powdered aluminum according to the following reaction:…

A: The reaction is given below.

Q: Ammonia, NH3, burns in oxygen gas according to the reaction: 4NH3(g) + 5O2(g) → 4NO(g) + 6H2O(l).…

A: Since oxygen gas is present in excess, ammonia is the limiting reagent in the given reaction. A…

Q: When heated, KClO3decomposes to form KCl and oxygen gas according to the following equation:…

A:

Q: Calcium hydride, CaH2, reacts with water to form hydrogen gas. CaH2(s) + 2 H2O(l)  Ca(OH)2(aq) + 2…

A: Calcium hydride, CaH2, reacts with water to form hydrogen gas. Chemical reaction: CaH2(s) + 2 H2O(l)…

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

A: Given data contains, Volume of methane gas is 25.5L. Pressure of methane gas is…

Q: A sample of ideal gas at room temperature occupies a volume of 15.0 L at a pressure of 752 torr. If…

A: Given, Note: 760 torr = 1 atm Initially: Pressure of a gas (P1) = 752 torr = 0.989 atm Volume of a…

Q: 3 H2 (g) + N2 (g) --> 2 NH3 (g)   A 3.22 L vessel containing the hydrogen at 21.1 oC and 6.750 atm…

A: To determine the theoretical yield, we have to know the moles of reactants present initially. To get…

Q: Oxygengascanbegeneratedbyheatingpotassiumchloratetoyieldoxygengas and potassium chloride. If 85.0 g…

A:

Q: Sodium chloride and oxygen may be combined to produce sodium chlorate. If 426 mg of product is to be…

A: The balanced reaction is – 2NaCl +3O2 →2NaClO3

Q: The Goodyear blimps, which frequently fly over sporting events, hold approximately 175,000 ft3 (or…

A: The equation which relates pressure, volume, temperature, number of moles and temperature with each…

Q: In some aquatic ecosystems, nitrate (NO3–) is converted to nitrite (NO2–), which then decomposes to…

A: Given data, Volume 2.20 L Molarity = 1.20 M Temperature=250C+ 273 = 298 K Decomposition reaction:…

Q: An impure sample contains Al and an unreactive material. A sample weighing 5.00 g is analyzed by its…

A: Given data: The mass of sample analyzed = 5.00 g. The volume of H2 gas collected V = 4.16 L.…

Q: Heptane (C7H16) gas reacts with oxygen gas to give carbon dioxide gas and water vapor.  If you mix…

A: C7H16+11O2=7CO2+8H2O No excess reagent reagent is used So, now mole of heptane required=1 mole Mole…

Q: CaCO3 decomposes at 1200 degrees Celsius to form CO2 gas and CaO. If 25 L of CO2 are collected at…

A:

Q: a sample of sodium chlorate, NaClO3 (molar mass= 106.44 g/mol), is completely decomposed according…

A:

Q: Calcium hydride, CaH2, reacts with water to form hydrogen gas:  CaH2(g) + 2 H2O(l) ---> Ca(OH)2(aq)…

A: Stoichiometry, in balanced chemical reaction is defined by the ratio at which reactants are reacting…

Q: When sulfur dioxide gas reacts with oxygen gas, sulfur trioxide forms.  1. If 3.5 moles of sulfur…

A:

Q: under thermal decomposition, potassium chlorate degrades into potassium chloride and oxygen by the…

A:

Q: A 1.65g of Al reacts with excess HCl and the liberated H2 is collected over water at 25 degrees…

A: 2Al (s) + 6HCl (aq) => 2AlCl3 (aq) + 3H2 (g) Mass of Al = 1.65 g   H2 gas collected ; Pressure =…

Q: ) Calcium hydride (CaH2) reacts with water to form hydrogen gas: CaH2 (s) + 2H2O (I) ---> Ca(OH)2…

A:

Q: You placed 6.35 g of a mixture containing unknown amounts of BaO(s) and MgO(s) in a 3.50-L flask…

A: From given datas  With ideal gas equation we are calculating initial and final number of moles of…

Q: Sodium metal reacts with chlorine gas to form sodium chloride. A closed container of volume…

A:

Q: When sodium chlorate (NaClO3) is heated, it decomposes into sodium chloride and oxygen gas. A…

A: Given Sodium Chlorate decomposes into sodium chloride and oxygen gas. Volume of gas= 400.0 mL…

Q: Consider the following reaction in a closed reaction flask. If 8.36 atm of gas A is allowed to react…

A: Since pressure is directly proportional to the number of moles, thus we can calculate the pressures…

Q: Water can react with carbon dioxide to form hydrogen carbonate according to the following chemical…

A: Given :-  H2O(l) + CO2(g) → H2CO3(aq)  Mass of Water = 421 g  Volume of container = 45.5 L…

Q: Hydrogen and Nitrogen gas react to form ammonia according to the following equation: 3H2 (g) + N2…

A: The number of moles for a given chemical species refers to the ratio of mass of the species to that…

Q: Zinc reacts with aqueous HCl to produce hydrogen gas (H2) according to the following reaction…

A:

Q: Ammonia and gaseous hydrogen chloride combine to form ammonium chloride.  NH3(g) + HCl(g)…

A: Given that the mass of ammonia is 4.21 g which combines with HCl to form NH4Cl. The reaction is…

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

A: Given:Atmospheric pressure =756 mmHgThe vapor pressure of water=17.5 mmHgVolume=9.82…

Q: Aluminum metal reacts with hydrochloric acid to produce hydrogen gas. 2 Al (s) + 6 HCl (aq) --> 2…

A:

Q: You placed 6.35 g of a mixture containing unknown amounts of BaO(s) and MgO(s) in a 3.50-L flask…

A: The conversion of temperature into Kelvin units and pressures into at units can be done as,

Q: In the laboratory, a chemist generated hydrogen gas via the electrolysis of water. The chemist…

A: 1 torr = 0.001 atm Therefore, 740 torr = 0.740 atm

Q: Calcium hydride, CaH2, reacts with water to form hydrogen gas: CaH2(s)+2H2O(l)→Ca(OH)2(aq)+2H2(g)…

A: The given chemical balanced equation as follows:

Q: A piece of dry ice (solid carbon dioxide) with a mass of 25.5 g sublimes (converts from solid to…

A: According to ideal gas equation,  PV = nRT V = (nRT÷P) n = moles = (given mass ÷ molecular mass)

Q: A sample of ideal gas at room temperature occupies a volume of 26.0 L at a pressure of 832 torr . If…

A: Given: Initial volume of gas = 26.0 L Initial pressure of gas = 832 torr. And final pressure of gas…

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.