Formic acid, HCHO2 is a convenient source of small quantities of carbom monoxide. When warmed with sulfuric acid, formic acid decomposes to give CO gas.  HCHO2(l)  --->   H2O (l) + CO (g) If 3.85 L of carbon monoxide was collected over water at 25.0 degrees C and 689 mmHg, how many grams of formic acid were consumed? (PH2O = 23.8 mmHg at 25 degrees C)

Q: For the reaction  Mg3N2(s) +3H2O(l)=3MgO(s)+2NH3(g) (A) if 10.3 grams of magnesium nitride is…

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Q: 1) A student is preforming the baking soda (NaHCO3) with vinegar (CH COOH) volcano experiment. If…

A: For STP. P = 1 atmT = 273 KV = 5.00 Lmolar mass of NaHCO3 = 84.01 g/molR = 0.08206 Latm/molK

Q: 10.0 L stainless steel container was charged with 4.00 atm of hydrogen and 3.00 atm of oxygen gas. A…

A: To determine the pressure in the tank at 22oC.

Q: Aerosol cans carry clear warnings against incineration because of the high pressures that can…

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Q: 10. LiOH is used to condition air in spacecraft by absorbing the carbon dioxide exhaled by…

A: According to the balanced equation, 2 moles LiOH can absorb 1 mole CO2.  We can convert the mass of…

Q: When a piece of Al metal is allowed to completely react with HCl (aq), 35.5 mL of hydrogen gas is…

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Q: Q: 42.5 L of ammonia (NH3) and 51.0 L of oxygen (O₂), both at STP, react according to the following…

A: Limiting reactant :- A reactant which is present in lesser number of moles than required as per…

Q: At an altitude of 11,000 m (a typical cruising altitude for a jet airliner), the air temperature is…

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Q: In a constant volume vessel, excessive H2 and 3.2 g O2 gas at 270 C create a pressure of 1.1…

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Q: A helium-filled weather balloon has a volume of 792 L at 22.9°C and 753 mmHg. It is released and…

A: Ideal gas law equation is the equation which obeys gas laws under all condition of temperature and…

Q: In the reaction, 2KClO3(s)⟶2KCl(s)+3O2(g) what mass of potassium chlorate, KClO3, would be required…

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Q: The combustion of octane, C, H, proceeds according to the reaetion shown. 18 2 C,H18() + 25 O,(g) →…

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Q: A sample of O2 with a pressure of 1.53 atm and a volume of 239 mL is allowed to react with excess NO…

A: The combined gas law is given by

Q: A mixture of KCl and KClO3 weighing 1.92 grams was heated; the dry O2 generated occupied 148 mL at…

A: Mass of mixture = 1.92 g Volume of O2(V) = 148 mL = 0.148L STP is standard temperature and pressure.…

Q: The following reaction is used to generate hydrogen gas in the laboratory. If 340.6 mL of gas is…

A: The volume of H2 = 340.6 mL = 0.3406 L Pressure of H2 gas collected = 748 mm Hg The pressure of H2…

Q: Consider the reaction for the synthesis of nitric acid:3 NO2( g) + H2O(l) → 2 HNO3(aq) + NO( g)(a)…

A: Given, Volume of NO2 = 12.8 L Amount of Water = 14.9 g Actual yield of HNO3 = 14.8 g Formula Used,…

Q: (a) What is the rms speed of O2 at STP? (b) If the average distance between O2 molecules at STP is…

A: Given data: Temperature = 273.15 K Average distance between the molecules of gas = 6.33 x 10-8 m…

Q: After dissolving an unknown tablet in water, the tablet dissolves and liberates a gas. Suppose at 1…

A: Given that:            Volume of gas (V) = 360 mL = 0.360 L               Temperature (T) = 20℃ =…

Q: A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0%…

A: We have to calculate the density of the mixture.

Q: A mixture used by divers for breathing purposes contains 34.3% helium (He), 51.7% nitrogen (N2) and…

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Q: A 2.02 g sample of aluminum reacts with excess of HCl(aq), and the liberated hydrogen gas is…

A: Given,  2Al(s) + 6 HCl(aq) -------> 2 AlCl3(aq) + 3 H2 (g)  The mass of Al = 2.02 g.   At…

Q: 2. A chemist vaporizes, to a gas, a volatile liquid hydrocarbon (CHO) compound, containing carbon…

A: Given that -  Density of the gas = 2.944 g/L  Temperature = 89.3°C = 362.3 K  Pressure = 755.3 mmHg…

Q: 2 Co (s) + O2 (g) --> 2 CoO (s) If 8.18 grams of solid cobalt react in a 3.21 L vessel at -34.80 oC…

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Q: O2  collected over water at 40°C and total pressure of 745 mmHg, what volume of gas is collected for…

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Q: A sample of magnesium metal reacts completely with an excess of hydrocholoric acid: Mg(s) + 2…

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Q: How many grams of iron are needed to completely consume 45.3 L of chlorine gas according to the…

A: In the reaction :  Iron(s) + chlorine (g)  iron(III) chloride (s) Volume of chlorine gas = 45.3 L…

Q: Nitrogen gas can be obtained by decomposing ammonium nitrate at high temperatures.  The nitrogen gas…

A: We are given Pambient=745 mm Hg Pwater =16.48 mm Hg we know Pambient=Pnitrogen+Pwater⇒Pnitrogen…

Q: A sample of gas contains 0.1600 mol of CH4(g) and 0.1600 mol of H2O(g) and occupies a volume of 18.4…

A: Given information: 0.1600 mol of CH4(g) and 0.1600 mol of H2O(g) volume of 18.4 L at reactant side…

Q: A 2.20 L container at 53.6 °C contains 6.21 g of N2O3(g). The N2⁢O3 gas decomposes completely,…

A: Volume of container V = 2.20 L  Temperature T = 53.6 degree C = 53.6 + 273.15 K = 326.75 K  Mass of…

Q: The catalytic decomposition of hydrogen peroxide yields oxygen gas and water, according to the…

A: The given reaction is as follows:

Q: 4.8 g of an inorganic metal oxide ore mainly contains 93% of Nickel (III) oxide which decomposes to…

A: The balanced equation is   2 Ni2O3 (s) -------> 4 Ni (aq) + 3 O2 (g) Mass of ore = 4.8 g Mass…

Q: If 5.15 LL of CO2 gas at 19 ∘C∘C at 775 mmHgmmHg is used, what is the final volume, in liters, of…

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Q: iron ( s ) + chlorine ( g ) ---> iron(III) chloride ( s ) How many grams of iron are needed to…

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Q: Calculate the volume of 1.62g of Helium gas at 25.670C and 872 mmHg.  (R = 0.0821 atm.L/mol.K

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Q: How many grams of phosphorus (P4) are needed to completely consume 78.2 L of chlorine gas according…

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Q: Consider the combustion of methanol below. If 64 grams of methanol reacts with 160 grams of oxygen,…

A: Record the given data, Combustion of methanol in presence of Oxygen to give Carbon dioxide and…

Q: How many grams of iron are needed to produce 13.0 L of hydrogen gas according to the following…

A: To solve this problem first we have to calculate the number of moles of hydrogen gas . As the given…

Q: A helium-filled balloon of the type used in long-distance flying contains 490,000 ft³ (1.4 x 107 L)…

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Q: A 2.53 L container at 74.1 °C contains 6.31 g of N2O3(g). The N2O3 gas decomposes completely,…

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Q: Consider the following reaction: 2SO2(g) + O2(g)-> 2SO3(g) What is the theoretical yield of SO3 ? If…

A: Answer:The reactant that is exhausted first in the chemical reaction and decides the yield of…

Q: Consider the reaction:  Zn(s) + 2 HCl(aq) --> ZnCl2(aq) + H2(g)   The hydrogen gas is to be…

A: Welcome to bartleby !  We have to calculate volume of hydrogen

Q: According to the reaction below, how many grams of sodium chloride can be produced from 31.9 L of…

A: Given: Volume is 31.9 L. Pressure is 0.922 atm. Temperature is 62oC. 2Na+Cl2→2NaCl

Q: 5. A 75.0 mL flask contains 0.1477 g of a volatile oxide of carbon. The pressure in the flask is…

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Q: A sample of unknown metal (X) of mass 0.116-g reacts with hydrochloric acid to produce 77.5mL of…

A: Given: mass of metal = 0.116 g Temperature = 20 °C pressure of wet gas = 754 mmHg vapor pressure of…

Q: Hydrogen gas is collected at 40oC during the following reaction:   Al          +            HCl…

A: From given datas Initially we are calculating number of moles from the balanced equation and then…

Q: A mixture of KCl and KClO3 weighing 1.92 grams was heated; the dry O2 generated occupied 148 mL at…

A: The mole concept can be used to calculate the moles of reactant or other products. One mole of the…

Q: 1) Calculate the volume of 1.62g of Helium gas at 25.670C and 872 mmHg.  (R = 0.0821 atm.L/mol.K)

A: As per our guidelines, we are supposed to answer?️ only one question. Kindly repost other questions…

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.