When sodium chlorate (NaClO3) is heated, it decomposes into sodium chloride andoxygen gas. A student heats a sample of sodium chlorate and the collected gasoccupies 400.0 mL at a temperature of 25 oC and a pressure of 0.931 atm. How many grams of sodium chlorate decomposed in this reaction?

Q: Solid sodium azide (NaN3) reacts with Iron(III)oxide to produce solid sodium oxide, iron metal and…

A: The balanced chemical equation representing the reaction of sodium azide with iron (III) oxide can…

Q: In a 10.00 L steel container, and at a temperature of 25.0oC, we have 76.0 g of O2(g) and 63.9 g of…

A: Given that:Volume of the container, V = 10.00 LTemperature, T = 25.0oC = 298.15 KThe container…

Q: A 15.0-L tank is filled with helium gas at a pressure of 1.00 x 102 atm. How many balloons (each…

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Q: Q2. A piece of dry ice (solid carbon dioxide) with a mass of 5.50 g is placed in a 10.0 L vessel…

A:

Q: If a 2.51L sample of gas at 1.87atm is expanded to a final volume of 7.97L, what is the final…

A: Given  Initial Volume ( V1 )   = 2.51 Liter  Initial Pressure ( P1 )  = 1.87 atm  Final Volume ( V2…

Q: The combustion of octane, C8H18 , proceeds according to the reaction shown. 2C8H18(I) + 25 O2…

A: The number of moles of carbon dioxide, produced in the reaction, is calculated as shown below where…

Q: If a gaseous mixture is made of 2.41g of He and 2.79g of Ne in an evacuated 1.04-L container at 25…

A: The volume of a container is 1.04 L. The given weight of He is 2.41 g.The given weight of Ne is 2.79…

Q: If 1.04 g Ar are added to 4.83 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: We have to calculate the total gas pressure of mixture.

Q: What volume of a chlorine gas is required to react completely with 0.309 mol of bromine according to…

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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: Hydrogen gas (a potential future fuel) can be formed by the reaction of methane with water according…

A: Given data contains, Volume of methane gas is 25.5L. Pressure of methane gas is…

Q: If 3.47 g Ar are added to 4.74 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: The pressure exerted by Ar is, PV = nRTP = nRTV ......(1) No. of moles of Argon = 3.47g/(40gmol-1) =…

Q: If 3.75 g Ar are added to 4.26 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: Given mass of argon = 3.75 g Molar mass of argon = 39.95 g/mol Number of moles of argon (n) =…

Q: When sodium chlorate (NaClO3) is heated, it decomposes into sodium chloride andoxygen gas. A student…

A: STP means standard pressure (P) and temperature (T) which  mainly corresponds to 1.0 atm and 273…

Q: A 2.85-g sample of an unknown chlorofluorocarbon decomposes and produces 564 mL of chlorine gas at a…

A:

Q: The hydrogen gas formed in a chemical reaction is collected over water at 30.0 °C at a total…

A: 67.  At 30°C the vapor pressure of water is 31.8 mm Hg. Simply subtract the pressure water vapor…

Q: Consider the following reaction: NaClO3(s)+ Fe(s)→ O2(g)+ NaCl(s)+FeO(s)   What volume of O2 gas…

A: Given data: The mass of NaClO3 = 2.10 kg = 2100 g. Pressure = 3.00 atm. Temperature = 391 K.…

Q: What volume of hydrogen gas is produced when 67.8 g of iron reacts completely according to the…

A: Given reaction is  iron (s) + hydrochloric acid(aq) -----> iron(II) chloride (aq) + hydrogen(g)…

Q: A sample of an unknown gas weighing 10.9 g occupies a 25.585 L container at a pressure of 0.694 atm…

A: Given a sample of gas,mass of gas =10.9 gvolume of gas =25.585 Lpressure of gas =0.694 atmand…

Q: If 4.81 g Ar are added to 4.01 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: First Calculate mole of Ar by mass÷molar mass Then Mole of He by PV=nRT. After this for total…

Q: What volume of hydrogen gas is produced when 18.3 g of sodium reacts completely according to the…

A:

Q: A 2.00 L sample of helium originally at 25 oC and a pressure of 745 torr is allowed to expand to a…

A: In all the gas laws (Boyle's, Charles' and Gay-Lussac's Law), pressure (P) and volume (V) remain in…

Q: volume of hydrogen gas

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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: 5. Oxygen gas reacts with powdered solid aluminum to produce solid aluminum oxide. What volume of…

A:

Q: If 3.33 g Ar are added to 2.82 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: Ideal gases are those gases which follow ideal gas equation. The relation between pressure, volume,…

Q: If 4.27 g Ar are added to 3.96 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: Temperature = 27.0 °C = 27.0 + 273.15 =300.15 K Volume = 2.00 L Pressure of He = 3.96 atm Mass of Ar…

Q: If 3.87 g Ar are added to 2.64 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: The number of moles of argon is calculated as follow 1 mole of argon = 39.95 g X mole of argon =…

Q: The following reaction is used to generate hydrogen gas in the laboratory. If 243 mL of gas is…

A: First determine the moles of hydrogen produced from given reaction under given conditions.…

Q: a sample of NH3 is added to an initially evacuated 2.00L flask at 125 degree celsius, until the…

A: The balanced reaction of ammonia and oxygen can be given as

Q: If 1.58 g Ar are added to 3.61 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A:

Q: If 2.55 g Ar are added to 4.98 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A: Mass of Ar = 2.55 g Moles of Ar = 2.55g/39.948 g/mol = 0.0638 mol Temperature = 27°C = 300K Volume =…

Q: a sample of sodium chlorate, NaClO3 (molar mass= 106.44 g/mol), is completely decomposed according…

A:

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: A chemical reaction occurring in a cylinder equipped with a moveable piston produces 0.641 mol of a…

A:

Q: water can react with carbon dioxide to form hydrogen carbonate according to the following chemical…

A: Given,   mass of H2O = 421 g  volume = 42.5 L temperature = 30.50 C.

Q: If 2.35 g Ar are added to 4.43 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A:

Q: If water is added to Magnesium Nitride, ammonia gas is produced when the mixture is heated. Mg3N2(s)…

A: Given :-  Mg3N2(s) + H2O(l) → MgO(s) + NH3(g)  mass of Mg3N2 = 13.6 g  Temperature = 35°C =…

Q: f you place 3.00 mol of N2 and 4.00 mol of O2 in a 35.0 L container at 25.0 °C, what will the…

A: From given data  T = 25 °C = 273 + 25 = 298 K V = 35 L  n1=3 n2= 4 Also, gas constant, R = 0.0821…

Q: When sodium chlorate (NaClO3) is heated, it decomposes into sodium chloride and oxygen gas. A…

A: Given Sodium Chlorate decomposes into sodium chloride and oxygen gas. Volume of gas= 400.0 mL…

Q: If 3.23 g Ar are added to 4.22 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A:

Q: If 1.79 g Ar are added to 1.18 atm He in a 2.00 L cylinder at 27.0 °C, what is the total pressure of…

A:

Q: What volume of hydrogen gas is produced when 87.7 g of sodium reacts completely according to the…

A:

Q: Consider the following reaction in a closed reaction flask. If 8.36 atm of gas A is allowed to react…

A: Since pressure is directly proportional to the number of moles, thus we can calculate the pressures…

Q: 6) Hydrogen gas can be generated from the reaction between aluminum metal and hydrochloric acid: 2…

A:

Q: A 15.00 L vessel containing 5.65 g H2 gas at 27°C is connected by means of a valve to a 6.00 L…

A: Given data H2 vessel volume = 15.00 L = V1 O2 vessel volume = 6.00 L = V2  mass of H2 gas = 5.65 g…

Q: Zinc reacts with aqueous HCl to produce hydrogen gas (H2) according to the following reaction…

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Q: A sample of ammonia (NH3), a colorless gas with a pungent odor, occupies a volume of 3.00 L at a…

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Q: A mixture of oxygen and xenon gases, at a total pressure of 882 mm Hg, contains 3.58 grams of oxygen…

A: Given : Mass of oxygen, O2 = 3.58 g And mass of Xenon, Xe = 39.4 g

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

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.