A sample of unknown metal (X) of mass 0.116-g reacts with hydrochloric acid to produce 77.5mL of “wet” gas at 20 °C and 754 mmHg. What is the unknown metal (X), (The vapor pressure of water at 20 °C is 18 mmHg). 2X(s) +6HCl (aq) -->2XCl2 + 3H2(g) A) Ni B) Cr C) Mn D) Fe E) Ga

Q: What is the total volume of gaseous products, measured at 350°C and 759 torr, when an automobile…

A: (a) Mass of C8H18 = 81.7 g Molar mass of C8H18 = 114.224 g/mol Moles of C8H18 =MassMolar mass=81.7…

Q: If a gaseous mixture is made by combining 2.15 g Ar and 3.13 g Kr in an evacuated 2.50 L container…

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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: What is the mole fraction of NO in a 55.0-L gas cylinder at 30°C which comes from a mixture of N2and…

A: Given information:Volume of gas cylinder = 55.0 LTemperature = 30 °CMoles of nitrogen gas = 3.238…

Q: Iron reacts with hydrochloric acid to produce iron(III) chloride and hydrogen gas.Fe(s) + HCl(aq)…

A: The balanced chemical equation is given below. 2Fe (s) + 6HCl (aq) → 2FeCl3 (aq) + 3H2 (g) The molar…

Q: (a) What is the total volume of gaseous products,measuredat 350C and 735 torr, when an automobile…

A: (A) The component of gasoline, i.e. the octane (C8H18) when burnt in presence of oxygen, it gives…

Q: The atmosphere slowly oxidizes hydrocarbons in a number of steps that eventually convert the…

A: At STP- 1 mole gas = 22.4 L   Calculating moles of each gas by using dimensional analysis- 155 mL…

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

A:

Q: 60 L tank containing 2.5 mol of CH4 . Initially, when Poutside was 1 atm, there was no leakage. But…

A: Given: Volume of tank = 60 L Initial moles of CH4 = 2.5 mol. Initial pressure of CH4 = 1.0 atm. And…

Q: If a gaseous mixture is made by combining 1.33 g Ar and 2.47 g Kr in an evacuated 2.50 L container…

A: When amount of Ar and Kr are added, volume remains same. So, sum of partial pressure of each gas is…

Q: 6. A breathing mixture is prepared in which He is substituted if N2. The gas is 79% He and 21% O2,…

A: The density is defined as the mass upon volume. Density is directly proportional to the mass and…

Q: Chlorofluorocarbons (CFC's) are gases that were formerly widely used in aerosols and refrigerators…

A: Given: Mass of CFC = 2.50 g. Temperature = 22 oC Pressure = 1.02 atm. And volume of flask = 500 mL =…

Q: If a gaseous mixture is made by combining 3.07 g Ar and 2.59 g Kr in an evacuated 2.50 L container…

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Q: Chlorofluorocarbons (CFC's) are gases that were formerly widely used in acrosols and refrigerators…

A: Given: Mass of CFC = 2.50 g. Temperature = 22 oC Pressure = 1.02 atm. And volume of flask = 500 mL =…

Q: What volume of water vapor in liters could be generated at 0.986 atm and 435. K by the combustion of…

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Q: (a) What is the total volume (in L) of gaseous products, measured at 3508C and 735 torr, when an…

A: a) Temperture (T)= 350°C=350+273=623K Pressure P =735 Torr=735760=0.967atm. mass of C8H18=100g…

Q: 4Al(s)+3O2(g)→2Al2O3(s) What volume of O2 gas, measured at 783mmHg and 18∘C, is required to…

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Q: Pure nickel metal can be obtained from the thermal decomposition of nickel tetracarbonyl according…

A: First we need to balance given chemical equation and calculate theoretical yield of gas from given…

Q: 2. A sample of molecular nitrogen gas, N2, occupies 3.0 L at a pressure of 3.0 atm. What volume will…

A: The volume of the sample is = 3.0 L The initial pressure of the sample is = 3.0 atm The final…

Q: Butane, C4H10, is used as a fuel for camping. If you have 108 mL of butane gas at 715 mmHg and 25…

A: According to ideal gas law PV = nRT  where P =pressure in atm  V = volume in L  n = moles of gas R =…

Q: tlands can play a significant role in removing fertilizer residues from rain runoff and groundwater;…

A: Introduction :  We have to calculate density of mixture .

Q: When strongly heated, CaCO3 decomposes into carbon dioxide gas and calcium oxide. What mass of…

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Q: If a gaseous mixture is made by combining 2.17 g Ar and 2.55 g Kr in an evacuated 2.50 L container…

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

A: Given: Volume of H2 = 2.1 L Temperature = 25.0 oC Total pressure = 694.8 mmHg Partial pressure of…

Q: What is the minimum volume, in mL, of 6.0 M H3PO4 necessary to produce 43.6 L of H2 gas in the…

A: First, calculate the number of moles of H2 gas using the ideal gas equation: PV =…

Q: In the first step of the industrial process for making nitricacid, ammonia reacts with oxygen in the…

A: Since 4 moles of ammonia is required to react with 5 moles of oxygen from the above balanced…

Q: in chemical analysis of a gas compound, it was observed that it contains 33.0% Silicon (Si) and…

A: Interpretation: The molecular formula of the compound is to be determined from the given…

Q: 2. A 0.500 g impure sample of LINO; is heated, causing it to decompose according to the following…

A: Given temperature = 300 K. 1 atm = 760 mm Hg. The pressure of the dry gas = 760 – 26.7 =733.3 mm Hg.

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: Butane, C4H10, is a component of natural gas that is used as fuel for cigarette lighters. The…

A: Interpretation: Butane, C4H10 is a component of natural gas that is used as fuel for cigarette…

Q: Concentrated hydrogen peroxide solutions are explosively decomposed by traces of transition metal…

A:

Q: Oxygen gas reacts with powdered aluminum according to the reaction: 4Al(s) + 302(g)→ 2Al,O3 (s) Part…

A: 4 Al(s) + 3 O2 (g) →2 Al2O3 (s) Number of moles of Al = Amount of Al/ atomic mass of Al…

Q: Four grams of a mixture of calcium carbonate and sand is treated with an excess of hydrochloric acid…

A: Since you posted multiple questions, we answered the first one We have the reaction CaCO3 + 2 HCl…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

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Q: If a gaseous mixture is made by combining 1.29 g Ar and 2.46 g Kr in an evacuated 2.50 L container…

A: The total pressure of a mixture of two non reacting gases is given by  PtotalV = (n1+n2)RT  Ptotal =…

Q: what is the density in (g/L) of H2 a 15 ℃ and a 1020 mmHg?

A: Given, pressure =1020 mm Hg =1.34 atmtemperature =15°C =(15+273.15)K =288.15 Kgas constant =0.0821…

Q: What volume of water vapor in liters could be generated at 0.989 atm and 407. K by the combustion of…

A: Given :-  C5H12(g) + 8 O2(g) ---> 5 CO2(g) + 6H2O(g) Mass of O2 = 292.07 g  Pressure = 0.989 atm…

Q: A 0.33 g sample of organic acid is vaporized in a sealed 300.0 mL container at 150oC and the…

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Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

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Q: A 3.19-g mixture of solid CaO and solid ZnO is reacted in a 2.00-L container with CO2(g) at a…

A: The chemical reactions taking place are: CaO(s)+CO2(g)→CaCO3  (s)-----1ZnO(s)+CO2(g)→ZnCO3(s)…

Q: In a 5.00L container at 25 degrees C, a mixture of gases contains 3.50g of CO, 8.56g of Cl2 and…

A: The partial pressure of any one gas in a mixture of two or more gases is calculated by using the…

Q: What was the initial temperature in Celsius?

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: A sample of NaNO3 is partially decomposed by heating, producing O2 gas that is collected safely over…

A: When a gas is collected over water, some water vapors are also present along with the gas. In this…

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

A: From given  Let us calculate the number of mol of H2 gas formed as follows

Q: 10. A 3.00-g sample of a mixture of K½O and BaO is placed in 600.0 cm³ vessel containing SO3 gas at…

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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: Based on the ideal gas law, there is a simple equivalency that exists between the amount of gas and…

A: At standard temperature and pressure (STP; 273.15 K and 1 atm respectively), one mole of gas…

Q: As one step in its purification, nickel metal reacts with carbon monoxide to form a compound called…

A: Pressure = 900 torr Temperature = 350 K

Q: lorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: According to ideal gas law the total pressure of a gas is directly proportional to the number of…

Q: Automobile air bags are inflated by nitrogen gas generated by the rapid decomposition of sodium…

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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.