In 1897 the Swedish explorer Andreé tried to reach the North Pole in a balloon. The balloon was filled with hydrogen gas. The hydrogen gas was prepared from iron splints and diluted sulfuric acid. The reaction is Fe(s) + H2SO4(aq) -> FeSO4(aq) + H2(g) The volume of the balloon was 4400 m3 and the loss of hydrogen gas during filling was estimated at 10.%. What mass of iron splints and 98% (by mass) H2SO4 were needed to ensure the complete filling of the balloon? Assume a temperature of 0°C, a pressure of 1.0 atm during filling, and 100% yield. Mass of Fe = ______g Mass of  H2SO4= ______g

Q: In a bromine-producing plant, how many liters of gaseous elemental bromine at 300oC and 0.855 atm…

A: Given data contains, Temperature is 300°C=573.15 K. Pressure is 0.855 atm. Mass of sodium bromide is…

Q: Here is the overall reaction in an automobile air bag: 20NAN (s) + 6S1O, (s) + 4KNO,(s) → 32N,(g) +…

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Q: gas was conducted at 47.2 °C. The Keq = 0.105

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

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

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Q: The airbags that protect people in car crashes are inflated by the extremely rapid decomposition of…

A: Decomposition reaction is a reaction in which a single reactant decomposes to form two or more…

Q: In a bromine-producing plant, how many liters of gaseous elemental bromine at 281. °C and 0.869 atm…

A: The given balanced reaction  Mass of  sodium bromide, NaBr = 396. g Mass of  sodium bromate, NaBrO3…

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: If 14.5g of calcium carbonate decomposes via the following reaction, how many liters of carbon…

A: Number of moles of Calcium carbonate can be calculated as follows: No. of moles of CaCO3= massmolar…

Q: Hydrogen gas generated from the reaction of aluminum with hydrochloric acid was collected over water…

A:

Q: Here is the overall reaction in an automobile air bag 20NAN, (0) +6SIO,(0)+4AKNO, 6)32N,(e) +…

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Q: You are working with an artist who has been commissionedto make a sculpture for a big city in the…

A: With environmental exposure of the material, the appearance and mass of the material are indicators…

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

A: Given, Pressure of H2 gas= 744 mm of Hg                               = 744760atm T= 25°C= 298K…

Q: To calculate universal gas constant (R) experimentally, the thermal decomposition reaction of KClO3…

A: The thermal decomposition reaction of KClO3 gives KCl and oxygen. MnO2 is used as catalyst for the…

Q: A 0.6333 g sample of a metal carbonate was reacted with hydrochloric acid. The carbon dioxide gas…

A: Given data, Mass of sample = 0.6333 g Temperature = 26.0oC Total pressure = 103.80 kPa = 1.024 atm…

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

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Q: 3 RT speed = V M %3D = 8.314 J/ (mol-K) and M is molar mass in kilograms per mole. Note that a joule…

A: rms speed = (3RT/M)1/2 For F2 molecules,  M = 38 g/mol = 38×10-3 Kg/mol So, rms speed= =…

Q: 1. Given the reaction:        2 Al (s) +  6 HCl (aq)    -->   2 AlCl3 (aq) +   3 H2 (g) A strip…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: One of the oldest units for atmospheric pressure is Ib in.2 (pounds per square inch, or psi).…

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Q: Report all your results by using significant figures and use dimensional analysis. A flammable gas…

A: The empirical formula is the chemical formula of any compound that represents the proportions of…

Q: A 0.6333 g sample of a metal carbonate was reacted with hydrochloric acid. The carbon dioxide gas…

A: We have given that the CO2 is collected at temperature of 26.0°C T = 26 + 273.15 = 299.15 K…

Q: Consider the following balanced reaction: 2 H₂S(g) + 3 O2(g) → 2 H₂O(l) +2 SO₂(g) 5.00 L of H₂S and…

A: The objective of this question is to determine the volume of sulfur dioxide (SO2) produced when 5.00…

Q: Given the reaction: 2 Al (s) + 6 HCI (aq) --> 2 AICI3 (aq) + 3 H2 (g) A strip of aluminum of unknown…

A: Given data :  2 Al(s) + 6HCl(aq) ==> 1 AlCl3(aq) + 3H2(g)  Temperature = 22.0°C = 295 K  Volume =…

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

A: The root mean square velocity (rms) of a gas is given by the formula  rms speed = 3RTM R = gas…

Q: Oxygen gas generated by the decomposition of potassium chlorate is collected over water at 25 °C in…

A: The reaction:  2KClO3(s) ==> 2 KCl (s) + 3O2 (g)  Given data :  Total pressure = 755.3 torr…

Q: Suppose a chemical engineer studying a new catalyst for the Haber reaction finds that 914. liters…

A: Using Ideal gas equation law., PV= nRT Given : V = 914 L P = 0.62 atm R= 0.08206 Latm/K*mol T =…

Q: 50 > A 0.775 g sample of a metal, M, reacts completely with sulfuric acid according to M(s) +…

A: According to the chemical equation, one mole of the metal reacts completely to form one mole of…

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: In our campus, there are approximately 30.000 students use 2.5 x 109 kJ of energy per day. Suppose…

A: Giveln Pressure = 9186 torr = 9186/760 atm 5.059 g CO2(g), 3.106 g H2O(l) Volume = 580ml = 0.58L…

Q: rms speed: m/s What is the rms speed of He atoms at 365 K? rms speed: m/s

A: rms for He is higher tha Cl2

Q: 7. You are given two samples of gas at identical P, T, and V, all near room temperature. Gas A is…

A: Root mean square speed is calculated as: vrms=3RTMm  vrms∝1Mm Average kinetic energy of gases is…

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: Given the reaction: 2 Al (s) + 6 HCI (aq) 2 AICI3 (aq) + 3 H2 (g) A strip of aluminum of unknown…

A: All the required calculations have been done in the following step.

Q: The "air bags" that are currently installed in automobiles to prevent injuries in the event of a…

A: The given reaction :  2NaN3(s) → 2Na(s) + 3N2(g) Temperature of system = 25°C = 298 K (0°C = 273 K)…

Q: 1.) This reaction occurs in large test tube at 32.0oC: 2 Al (s)  + 3 H2SO4(aq) ---> 6 H2 (g)  +…

A: The balanced reaction taking place is given as, => 2 Al (s) + 3 H2SO4 (aq) -------> 6 H2 (g) +…

Q: The International Space Station is equipped with a Vika Oxygen Generator which uses the following…

A: The given reaction is:Volume (V) = Pressure (P) = 0.21 atmTemperature (T) = 24.5oCGas constant (R) =…

Q: .) This reaction occurs in large test tube at 32.0 ° C: 2 Al (s) +3 H2SO4 (aq) → 6 H2 (g) + Al2…

A: Reaction:2 Al (s) + 3 H2SO4 (aq) →  6 H2 (g) + Al2(SO4)3 (aq)Use an ideal gas equation to solve for…

Q: Given the reaction: 2 Al (s) + 6 HCI (aq) --> 2 AICI3 (aq) + 3 H2 (g) A strip of aluminum of unknown…

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Q: Report all your results by using significant figures and use dimensional analysis. A flammable gas…

A: In the given question we have to find the percentage composition of substance and empherical…

Q: The volume of hydrogen gas produced was not at standard temperature and pressure. Convert the volume…

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Q: For many purposes we can treat ammonia (NH₂) as an ideal gas at temperatures above its boiling point…

A: Given T1 = -23°C = 273.15 - 23 = 250.15 K T2 = ? Let P1 be x So, P2 = 3x

Q: Rb2CO3 (s) + 2 HCe (aq) → 2 RbCe (aq) + H2O (e) + CO2 (g) When 69.3 g Rb,CO3 is allowed to react…

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Q: Oxygen was produced and collected over water at 22 °C and a pressure of 754 mmHg from the following…

A: Given: Atmospheric pressure = 754 mm Hg Volume of oxygen gas = 532 mL    (1 L = 1000 mL)…

Q: Patrences In 1897 the Swedish explorer Andree tried to reach the North Pole in a balloon. The…

A: Volume of balloon = 4800m3. % loss of Hydrogen = 20% Therefore, volume of Hydrogen to be released to…

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.