Calcium hydride, CaH2, reacts with water to form hydrogen gas: CaH2(s)+2H2O(l)→Ca(OH)2(aq)+2H2(g) This reaction is sometimes used to inflate life rafts, weather balloons, and the like, where a simple, compact means of generating H2 is desired. How many grams of CaH2 are needed to generate 145 L of H2 gas if the pressure of H2 is 823 torr at 21 ∘C?

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: MnO2(s)+4HCl(aq)⟶MnCl2(aq)+2H2O(l)+Cl2(g) How much MnO2(s) should be added to excess HCl(aq) to…

A: The given chemical reaction MnO2(s)+4HCl(aq)⟶MnCl2(aq)+2H2O(l)+Cl2(g) Suggests that 1 mol of MnO2…

Q: Magnesium burns in air to produce magnesium oxide, MgO, and magnesium nitride, Mg3N2. Magnesium…

A: Magnesium burns in air to produce magnesium oxide MgO. and magnesium nitride reacts with water to…

Q: If 0.130 mol of N2 gas effuses through a small hole over the course of one hour, calculate the…

A: A question based on effusion, which is to be accomplished.

Q: If 0.0958g of an unknown metal was reacted with HCl, according to the equation below, and 36.5 mL of…

A: The volume of 1 L is equal to 1000 mL and the temperature of 23.0oC is equal to 296.15 K. The number…

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

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Q: What volume of hydrogen gas is produced when 33.2 g of iron reacts completely according to the…

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Q: The average kinetic energy of the molecules in a gas sample depends only on the temperature, ?.…

A: Root mean square speed is calculated as: vrms =3 R TM where T= Temperature R = Universal Gas…

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

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

A: Please find your solution below : To solve this, we need to know about ideal gas equation which is…

Q: The combustion of octane, C8H18,C8H18, proceeds according to the reaction shown.…

A: We have to calculate volume of CO2 gas produces at 19°C and 0.995atm. So at first using mole ratio…

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

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

A: Welcome to bartleby !

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: Nitrogen and hydrogen gases react to form ammonia gas asfollows:N2(g) + 3 H2(g)----->2 NH3(g)At a…

A: The required reaction is given below. Ideal gas law tells that volume is proportional to the number…

Q: Ammonium nitrate is an explosive compound and it decomposes at a high temperature according to the…

A: An ideal gas follows a theoretical concept in which there is no interparticle interaction between…

Q: Consider the reaction:  MnO2 (s) + 2Cl-(Aq) + 4H+ (Aq)===> Mn2+ (Aq) + Cl2(g) + 2H2O(g)  a) how…

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

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

A: Given mass of No3 =315 g Molar mass of No3 =(!4+16X13) g/mol =62 g/mol No of moles of no3 =315g/62…

Q: Small quantities of chlorine can be prepared in the laboratory by the reaction described by the…

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Q: Small quantities of chlorine can be prepared in the laboratory by the reaction described by the…

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Q: 300 mL nitrogen gas reacts with 751 mL hydrogen gas. both gases are at the same temperature and…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

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

A: The balanced reaction taking place is given as => C6H8O7 (s) + 3 NaHCO3 (s) + H2O (l) → Na3C6H5O7…

Q: If it takes 6.14 seconds for 16.3 mL of C3Ha(g) gas to effuse through a pinhole into a vacuum, how…

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Q: Before small batteries were available, carbide lamps were used for bicycle lights. Acetylene gas,…

A: The given reaction is, CaC2 + 2H2O → C2H2 + Ca(OH)2 The number of moles of calcium carbide present…

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

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Q: 233 mL nitrogen gas reacts with 583 mL hydrogen gas. Both gases are at the same temperature and…

A: It is given that 233 mL of nitrogen is reacting with 583 mL of hydrogen gas at the same temperature…

Q: What volume of O2 is produced when 47.2 g of hydrogen peroxide (H2O2) decomposes to form water and…

A: Given, ___H2O2 (aq) → ___H2O (l) + ___O2 (g) Balancing the above chemical equation 2H2O2 → 2H2O + O2…

Q: The average kinetic energy of the molecules in a gas sample depends only on the temperature, ?.…

A: Given information: Temperature = 345 K

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

A: The balanced reaction taking place is given as, => MnO2 (s) + 4 HCl (aq) ⟶ MnCl2 (aq) + 2 H2O (l)…

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

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Q: Hydrogen gas (MW = 2.02 g/mol) can be produced from the reaction of methane (MW = 16.05 g/mol) and…

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Q: Ammonia is produced when nitrogen and hydrogen gases react at high pressures and temperatures: N2…

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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: Consider the formation of chlorine gas, from household bleach (sodium hypochlorite) and hydrochloric…

A: The given reaction is, NaClO (aq) + 2 HCl (aq) → Cl2(g) + H2O (l) + NaCl (aq) The given parameters…

Q: Formic acid, HCHO2, is a convenient source of small quantities of carbon monoxide. When warmed with…

A: Given: HCOOH (l) ---H+------>   H2O(l) + CO(g)  3.85 L of carbon monoxide was collected over…

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

A: Pressure = 765 Torr Volume = 405 mL = 0.405 L Temperature = 25°C = 298 K  Mass of MnO2 required =?

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

A: Given,Volume of chlorine to be obtained = 215mLTemperature = 250C.Pressure = 765 torr.

Q: The combustion of octane, C8H18, proceeds according to the reaction shown.…

A: From the given balanced equation, it can be seen that sixteen mole CO2 is produced by the reaction…

Q: The complete combustion of methane, CH4, can be represented by the equation         CH4 (g) + 2 O2…

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

A: Given, Calcium hydride, CaH2, reacts with water to form hydrogen gas,according to the reaction as…

Q: The combustion of octane, C8H18, proceeds according to the reaction shown.…

A: From the balanced equation, it is clear that two moles of octane react to give 16 moles of carbon…

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

A: As per the given balanced chemical reaction is calcium hydride CaH2 reacts with water to form…

Q: The combustion of octane, C8H18, proceeds according to the reaction shown.…

A: The volume of carbon dioxide produced in the combustion of 538 mol of octane at 22.0 oC and 0.995…

Q: The following equation represents the oxidation of ammonia, NH3. 4NH3(g) + 5O2(g)  →  4NO(g) +…

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

A: In the given reaction the number of Cl2 gas can be obtained using ideal gas law equation: Where, P…

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

A: Mole Concept problem and Question is solved as per question need

Q: Sulfur dioxide, a gas that plays a central role in the formation of acid rain is found in the…

A: Boyles law is defined as at constant temperature, pressure of gas is inversely proportional to…

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: Combustion of hydrocarbons such as pentane (C5H12) produces carbon dioxide, a "greenhouse gas."…

A: Answer: Ideal Gas equation is shown below: PV=nRT Here: P=pressure of the gasV=volume of the…

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.