In a common Freshman College Laboratory experiment, KClO3 is decomposed by  heating to give KCl and O2. What mass of KClO3 must be decomposed to give 238mL  of O2 at 28°C and 752 mmHg?

Q: oxygen can be generated in the laboratory by heating potassium chlorate until it it decomposes. what…

A: The potassium chlorate is heated in laboratory to generate oxygen.   2KClO3 (s)→2KCl (s) + 3O2 (g)…

Q: What minimum volume of chlorine gas (at 298 K and 275 mmHg) is required to completely react with…

A: Below attached file showing the details answer. All the best.

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

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Q: 3. How much pressure in kPa does 2 moles of nitrogen gas at 55°C exert on a container that holds 63…

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Q: What volume of O2 at 798 mmHg and 41 ∘C is required to synthesize 23.0 mol of NO?

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Q: When 44.5 L of nitric oxide reacts with 38.2 L of oxygen at 423 K under a constant pressure of 1.03…

A: We have given that  When 44.5 L of nitric oxide reacts with 38.2 L of oxygen at 423 K under a…

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

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Q: A What is the minimum mass, in kg, of sodium chloride needed to make 2.7 x 10° L of chlorine gas at…

A: Given :-  2 NaCl(s) → 2Na(s) + Cl2(g)  Volume of Cl2 = 2.7 × 105 L  To calculate :-  Mass of NaCl…

Q: What volume of carbon dioxide gas (in L) at 21*C and 781 mmHg could be absorbed by 327g of lithium…

A: Given data,Temperature=21oC21+273.15=294.15KPressure=781mmHg=781760atm=1.027atmMass of LiOH=327g

Q: Calculate the grams of KOH from the reaction of 4.71 L of ozone (O3) at STP.

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Q: What volume of gaseous water, H2O, has the same moles of gas as 10.0 L of xenon gas at the same…

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Q: What pressure of Neon gas would you expect to find inside a sealed glass container with a 1.66 L…

A: Given values are, Volume V= 1.66 L Moles n= 0.891 mol  Temperature T= 313 K Pressure =?  Gas…

Q: 2. A 25.0 L sample of gas contains 0.75 moles of bromine, Br2. At the same temperature and pressure,…

A: Ideal Gas EquationPV=nRTwhere , P=Pressure of gas in atm           V=Volume of container of gas…

Q: What is the density (in g/L) of carbon tetrachloride (CCl4) vapor at 728 mm Hg and 120 °C ?

A: It is given that CCl4 has a vapour pressure of 728 mmHg and is at a temperature of 120°C, The…

Q: Aluminum reacts with concentrated hydrochloric acid to produce hydrogen gas. 2 Al(s) + 6 HCI(aq) → 2…

A: Given data contains, At STP, volume of H2 is 502.0 mL. The given chemical equation is, 2 Als+6…

Q: Suppose we have a 12.2 L sample containing 0.50 mol oxygen gas (O2) at a pressure of 1 atm and a…

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Q: When excess water is added to 10.3 grams of magnesium nitride, what volume of ammonia gas would be…

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: What would be the volume of a sample of CO2 if the sample contained 400 grams at 35°c and 785 mmHg?

A: Given :-  Mass of CO2 = 400 g  Temperature = 35°C  Pressure = 785 mm Hg  To calculate :  Volume

Q: Consider the reaction between aluminum and sulfuric acid to produce aluminum sulfate and hydrogen.…

A: One mole of any gas at STP(standard temperature and pressure i.e 273 K and 1 atm ) take up a volume…

Q: Magnesium metal reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas. What…

A: Given: Volume of Hydrogen Gas = 0.25 L Pressure = 1.0 atm Temperature= 0.0 oC To calculate: Mass of…

Q: How much energy (in kJ) is absorbed when 106. L of nitrogen dioxide is created at STP?

A: Given, Volume of Nitrogen dioxide created at STP = 106. L Amount of energy absorbed = ? Note: for…

Q: What volume does 12.6 grams of sulfur trioxide occupy at 35 degree C and 1.36 atm?

A: Ideal gas equation is, PV= nRT Where, P=pressure in atm, V=Volume in L, n =number of moles R=gas…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: To solve this problem we will use Stoichiometry of balanced chemical equation .  First we will find…

Q: How many liters of oxygen are necessary for the combustion of 425 g of sulfur, assuming that the…

A: Chemical equation for the combustion of sulfur is: S+O2→SO2 Hence, 1 mole of oxygen is required to…

Q: A chemist vaporized a liquid compound and determined its density. If the density of the vapor at…

A: We will assume the gas to behave ideally when the liquid is vaporized . As the gas is behaving…

Q: How many liters of hydrogen gas at STP were generated from 52.70 g of zinc metal?

A: Generation of hydrogen gas from 52.0 g of Zn metal.

Q: In one lab, the gas-collecting apparatus used a gas bulb with a volume of 231 mL. How many grams of…

A: Given: Volume of CO2 produced = 231 mL = 0.231 L                                           (Since 1…

Q: What is the volume of 4.55 x 1025 molecules of C4Hs at STP (Standard Temperature Pressure)?

A: Given T = 273 K , P = 1atm n= no of moles  = ( 4.55 x 1025 ) / 6.023 x 1023 = 75.54 moles

Q: In the presence of a platinum catalyst, ammonia, NH3, burns in oxygen, O2, to give nitric oxide, NO,…

A: Avogadro's Law states that, at the same temperature and pressure, the volume of a gas is directly…

Q: A 20.0 g sample of mercury(II) oxide (HgO, molar mass = 216.6 g/mol) is heated strongly, causing it…

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

A: Given-> Volume of N2(g) = 87.0 L T = 12.0°C = 12.0 + 273 = 285 K P = 1 atm

Q: What volume is occupied by 0.146 mol of CO, at 272.3 K and 915 mmHg? L %3D

A: Given data ,  Moles of CO2(n) = 0.146 mol  Temperature (T) = 272.3 K  Pressure of CO2(P) = 915 mm Hg…

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

A:

Q: Pyruvic acid, HC3H3O3, is involved in cell metabolism. It can be assayed for (that is, the amount…

A: The given data is as follows: HC3H3O3(aq) → C2H4O(aq) + CO2(g) The volume of carbon dioxide = 21.2…

Q: Assuming ideal gas behaviour, what would be the density of gaseous cyanogen (C2N2) at 27. °C and 856…

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

A: 2 KClO3 ---> 2 KCl + 3O2  Volume of O2 = 0.238 L  Temperature = 28°C  Pressure = 752 mm Hg 760 mm…

Q: The Haber Process synthesizes ammonia at elevated temperatures and pressures. Suppose you combine…

A: At STP the volume of one mole of gas is 22.4 L. Then, at STP, 22.4L of N2 contains 1 mole of N2 .…

Q: Consider the following reaction: Zn(s)+2HCl(aq)=ZnCl2(aq)+H2(g) If 15.00 g of solid zinc reacts with…

A: The reaction  Zn(s)+2HCl(aq)------------------->ZnCl2(aq)+H2(g)

Q: How much potassium chlorate should be heated to produce 2.24L of oxygen at NTP?

A: Given: Potassium chlorate is heated to produce 2.24 L of oxygen at NTP.

Q: What is the mass of the solid NH4Cl formed when 73.0 g of NH3(g) are mixed with an equal mass of…

A: Given : The reactants are NH3 and HCl. Mass of NH3 taken = 73.0 g Mass of HCl taken  73.0 g…

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

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Q: What volume does 7.43×1021 molecules of N2 occupy at STP?

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Q: What would be the pressure of H2 (g) formed by the reaction of 89 grams of Al performed in a 10L…

A: According to ideal gas equation

Q: What volume of O2 at 988 mmHg and 31 °C is required to synthesize 23.5 mol of NO?

A: Given, Pressure = 988mmHg. Temperature = 31oC. Moles of NO = 23.5mol. Moles of O2 needed prepare…

Q: 3.) How many of aluminum nitrate are found in 5.61 x 1023 molecules of this compound? 4.) What is…

A: Number of mole = number of atom÷6.022×10^23 Mass = mole × molar mass Density of gas = PM/RT

Q: What volume of NH3 (measured at STP) can be produced by reacting 8.51 liters (STP) N2 with 3.15 x…

A: Use stoichiometry of the equation to get the answer.

Q: Hydrogen gas can be prepared by the reaction of zinc metal with dilute aqueous hydrochloric acid:…

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Q: What volume of H2 will be combine with the 22 L CL2 (g) to form HCl (g)? What volume of HCl (g) will…

A: Given data contains,  Volume of chlorine is 22L.

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.