In 1783, the French physicist Jacques Charles supervisedand took part in the first human flight in a hydrogen balloon. Such balloons rely on the low density of hydrogenrelative to air for their buoyancy. In Charles’s balloonascent, the hydrogen was produced (together with iron(II)sulfate) from the action of aqueous sulfuric acid on ironfilings.(a) Write a balanced chemical equation for this reaction.(b) What volume of hydrogen is produced at 300 K and a     pressure of 1.0 atm when 300 kg sulfuric acid is consumed in this                 reaction?(c) What would be the radius of a spherical balloon filled     by the gas in part (b)?

Q: 9. The critical temperature of oxygen is 155 K. What does this mean? (a) Oxygen is very cold. (b)…

A: In this question, we have to choose the correct option which explains the meaning regarding the…

Q: If sufficient acid is used to react completely with 10.5 grams of Mg ,…

A: Magnesium reacts with hydrochloric acid to form magnesium chloride and hydrogen gas. The equation…

Q: Oxygen gas, generated by the reaction is collected over water at 27°C in a 5.87-L vessel at a total…

A: Given : Temperature = 27 oC Total pressure of gas mixture = 1.00 atm = 760 torr Volume of vessel =…

Q: hree containers of equal volume are filled with three different gases. The first container is…

A: Correct Option :  ( a ) the number of moles of gas in the containers are the same.

Q: Which of the following statements are true? Which are false? Why is each true or false? (c) A…

A: A substance has three basic physical property- volume, pressure and temperature

Q: The ideal gas law relates the amount of gas present to its pressure, volume, and temperature. The…

A:

Q: Suppose 125 g of NO3- flows into a swamp each day. What volume of CO2 would be produced each day at…

A:

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

A: Answer:- Firstly a balanced chemical equation is written then using the simple concept of…

Q: If you double the volume of a constant amount of gas at a constant temperature, what happens to the…

A: a) The pressure doubles.(b) The pressure quadruples.(c) The pressure does not change.(d) The…

Q: . A gas occupying a volume of 528 ml at a pressure of 745 mmHg and at a temperature of 12 ° C, was…

A: To solve this problem we will use combined gas law which is  P1V1/T1 = P2V2/T2   Where ,…

Q: In the given drawing identical containers with 2 L volume are held at 25 "C constant temperature. In…

A: Volume of container A = Container B = Container C = 2L Initial stage Pressure at container A =…

Q: A 2.16 g sample of phosphorus was burned in a large excess of chlorine, and the phosphorus chloride…

A: To Calculate molar mass , we can use the relation that rate of effusion is inversely proportional to…

Q: If a 2.183 g sample of impure cobalt(III) carbonate is heated, and 500 mL of carbon dioxide is…

A: The question is based on reaction stoichiometry. we have been given quantity of carbon dioxide…

Q: If 27.2 grams of potassium carbonate is reacted with 125 ml of .700 M hydrobromic acid in 3.5 L…

A: K2CO3 + 2 HBr ==> 2 KBr + CO2 + H2O  Given mass of K2CO3 = 27.2 g  Given volume of HBr = 125 ml =…

Q: Phosphorus trichloride is important in the manufacture of insecticides, fuel additives, and flame…

A: To find: (a) What different molecular masses (in amu) can be found for PCl3? (b) Which is the most…

Q: A flammable gas contains only C, H, N, and Cl. The complete combustion of a 100.0 mg sample of this…

A:

Q: A sample of volume 18.3 L has a mass of 57.9 g.(a) Is the material gaseous or condensed?(b) If the…

A: Since we know that gases molecules are spread over the entire vessel therefore it has very less…

Q: ) (a) What is the volume of one mole of hydrogen gas at 273 K and 760 torr? (b) What is the volume…

A: Temperature = T = 273 KPressure = 760 torrNo of moles of gas (Nitrogen) = 1Volume = to be determined…

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 Volume of gas over water = 103.80 kPa…

Q: Dissolving 3.00 g of an impure sample of CaCO3 in an excess of HCl acid produced 0.656 L of CO2…

A: Given : Mass of CaCO3 sample = 3.00 g Volume of CO2 produced = 0.656 L  Temperature = 20 oC  And…

Q: 69. Lime, CaO, is produced by heating calcium carbonate, CaCO3; carbon dioxide is the other product.…

A: Steps involved in the process of calculation of volume of CO2 in the decomposition of CaCO3. STEP1:…

Q: what is the ratio of effusion rates of krypton and neon at the same temperature and pressure?

A: The process of escaping the gas molecule through a very small hole is known as effusion. During…

Q: sample of oxygen gas was collected by displacement of water in gas collection apparatus. The total…

A: Here we have to use Daltons law- Ptotal=Pwater+Poxygen It is given vapor pressure of water is 22.6…

Q: 2. What happens to the volume of a gas in a cylinder with a movable (a) The pressure is doubled…

A: a). when pressure is doubled while temperature is kept constant: As per Boyles's law, pressure and…

Q: A sample of 257.0 mL of wet nitrogen gas was collected over water at a total pressure of 759 torr…

A:

Q: (a) A sample of nitrogen gas occupies a volume of 3.00 L at 760 mm Hg and 0.0 °C. If the volume of…

A: The ideal gas equation is given by, P1V1T1=P2V2T2 where P is the pressure, V is the volume and T is…

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: When some magnesium nitride, Mg3N2 reacts with water, 22 ◦C and 0.985 atm total under pressure 758…

A: The reaction of Mg3N2 with water is given as:            Mg3N2 + H2O → MgOH2  + NH3 The balanced…

Q: A sample of limestone (calcium carbonate, CaCO3) isheated at 950 K until it is completely converted…

A: Given, 8.47 kg of solid Ca(OH)2 T = 950 K P= 0.976atm

Q: A sample of air contains 78.08% nitrogen, 20.94% oxygen,0.05% carbon dioxide, and 0.93% argon, by…

A: Given information The composition of gases in the air by volume is:  Nitrogen = 78.08 % Oxygen =…

Q: If 56.2 grams of carbonic acid are sealed in a 2.00 L soda bottle at room temperature (298 K) and…

A: recall the given reaction           H2CO3aq→H2Ol+CO2(g) Find  moles of carbonic acid that contain…

Q: 25 g of hydrogen chloride have been treated with 50 g of manganese dioxide, obtaining manganese (II)…

A: Volume of chlorine obtained is: 4.31 LExplanation:

Q: The effusion rate of a gaseous compound at a certain temperature and pressure is 25.0mL/min. Under…

A: Graham's law : " The rate effusion of a gas is inversely proportional to sqare root of density  or…

Q: A high altitude balloon is filled with 1.41 x 10* L of helium gas at temperature of 21° C and 1.00…

A: Using the ideal gas law equation to solve both.  PV = nRT Where,  P= pressure V = volume n= moles R…

Q: Balloons may contain tiny microscopic holes, which allow the gas particles within to escape via…

A: When gas comes out of a small hole, we normally termed it as effusion. From Graham's law of…

Q: A neon atom has a radius of 68 pm. (a) Calculate the volume of 1 mol Ne atoms; V = 4πr3/3

A: All atoms are considered to be sphere. Therefore, the volume of the atom is given by , Volume =43πr3…

Q: A sample of 4.72 mol of krypton is confined at low pressure in a volume at a temperature of 68 °C.…

A: Number of mol of Krypton (initial) = 4.72 mol Temperature = 680C Root-mean square speed formula is

Q: (a) How many molecules are there in 1L of air at a temperature of 27°C? (b) How many kilomoles of…

A: Given Data: Volume of air, V = 1 L Temperature, T = 27oC = 27 + 273 K = 300 K Taking pressure of air…

Q: Hydrogen is produced by the complete reaction of 6.24 gsodium with an excess of gaseous hydrogen…

A: The ideal gas equation is given by, PV=nRT where P is the pressure, V is the volume, n is the number…

Q: For each of the following, which shows the greater devia-tion from ideal behavior at the same set of…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Suppose 395 g of NO3- flows into a swamp each day. What volume of CO2 would be produced each day at…

A: According to the question, The mass of the NO3- = 395 gThe temperature = 17+273 K = 290 KThe…

Q: In an experiment, a sample of zinc metal was added to excess hydrochloric acid and the evolved…

A:

Q: The air in a flask is to be replaced with He gas in a way similar to how air is replaced in the…

A: Air is a homogeneous mixture of gases. The major component of air is nitrogen gas(78%). Hence, 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.