You are working on a demonstration for your little sister’s Brownie troop. It requires you to collect some hydrogen gas in a balloon and ignite it. To safely collect the 500.0 mL hydrogen that you need, you must pump it through a bucket of water. The weather forecast tells you it is 22.5 oC inside your room and the barometer reads 755 mmHg. What is the pressure of the H2 you collected?

Q: 138. You have two rigid gas cylinders. Gas cylinder A has a volume of 48.2 L and contains N2(g) at…

A: Given:Volume of gas (VN2) = 48.2 L.Pressure of gas (PN2) = 8.35 atm.Temperature of gas (TN2) = 25℃ =…

Q: A sample of methane gas (CH4) at 15.7 oC is either heated or cooled. The pressure increases from…

A: The relationship between the temperature, pressure, and volume of the initial and final state of an…

Q: In a steel container of 5.00 L at 575 K, the partial pressures of H2(g) and O2(g) are, respectively,…

A:

Q: 1. Sodium azide (NaN3) is an ionic solid that is used in airbags to generate nitrogen gas: 2 NaN3…

A:

Q: A reaction between liquid reactants takes place at 12.0 °C in a sealed, evacuated vessel with a…

A: Mole is equal to weight of substance divide by it's molar mass

Q: Liquid nitrogen trichloride is heated in a 1.75-L closed reaction vessel until it decomposes…

A: Pressure of N2: 192 torr Pressure of Cl2: 577 torrExplanation:

Q: How many moles of helium gas will it take to fill a balloon with a volume of 1.75 L when the…

A:

Q: In a laboratory where gases are being collected, the atmospheric pressure is 753.5 mm Hg, and the…

A: In a laboratory where gases are being collected, the atmospheric pressure is 753.5 mm Hg, and the…

Q: A sample of gas at 840.9 mmHg and occupying a volume of 13.84 L is transferred to a smaller…

A: Boyle's law It states that at a given temperature and composition pressure of any gas is inversely…

Q: Gas Z was collected over water at 21°C on a day when atmospheric pressure was 757 torr. The volume…

A: The pressure in the collection tube is due to water vapor and the gas Z. Since, the total pressure…

Q: Gaseous ammonia and hydrogen chloride react to form solid ammonium chloride, NH3 (g) + HCI (g) →…

A: Calculate the excess moles of reactant,         Moles of NH3 = 3.00 g17.031 g/mol = 0.1761 molMoles…

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

A:

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…

A:

Q: We have a container enclosing a mixture of N2(g) and O2(g). The total pressure is 4.12 atm. The…

A:

Q: What is the total pressure in atmospheres of a gas that contains 1.0 g of H 2 and 8.0g of Ar in a…

A: Moles of H2 gas = mass of H2 molar mass of H2  = 12 = 0.5 mol  Moles of Ar gas = mass of Ar molar…

Q: A 2.01 L flask containing 2.31 g of helium gas (molar mass = 4.003 g/mol) is separated by a stopcock…

A: Solution:      Number of moles in a solution is given by the ratio of number of moles of substance…

Q: gas mixture contains O 2 , N 2 , and Ar at partial pressures of 125, 175, and 225 mmHg,…

A: Interpretation: The partial pressure in millimeters of mercury for carbon dioxide gas when added to…

Q: what

A: Weight = 14.0 g fluorine gas P1 =  21.0atm at a certain Temperature P2 = 4.30

Q: What is the theoretical yield of NH3 gas?

A: Ideal gas equation :-  PV =nRT  P is pressure of gas  V is volume of gas  n is the number of moles…

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: gaseous mixture of O2O2 and N2N2 contains 38.8 %% nitrogen by mass. What is the partial pressure of…

A:

Q: A 100.0 mL flask contains 0.126 g of a volatile oxide of nitrogen. The pressure in the flask is 760…

A: Given: Volume(V)=100mL=0.1LWeight(w)=0.126gPressure(P)=760torrTemperature(T)=17oC=290.15KM=molar…

Q: Sulfuric acid is essential to dozens of important industries from steelmaking to plastics and…

A: We will first calculate the moles of SO2 produced. From that only we can calculate the mass of…

Q: Consider the following reaction:      2 NaHCO3(s)  -->  Na2CO3(s)  +  CO2(g)  +  H2O(l) How many…

A: A numerical problem based on mole concept, which is to be accomplished.

Q: In the fermentation of glucose (wine making), 760 mLmL of CO2CO2 gas was produced at 31 ∘C∘C and…

A: Given :  initial pressure = 1.20 atm  initial volume = 760 mL  initial temperature = 31°C  final…

Q: Producing hydrogen gas is becoming a very important technical and economic concern for food…

A:

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: chemist

A:

Q: xenon fluoride can be prepared by heating a mixture of Xe and F2 gases to a high temperature in a…

A: Given: Volume of the container: 0.25 L Pressure = 0.12 atm Temperature= 0.0 °C After addition of…

Q: Two separate flasks are each filled with a gas at 25.0°C; the valve between them is opened and the…

A: Before mixing both the gases C3H8 and Ne have their initial pressure and volume. After mixing volume…

Q: What height of water (in meters) is necessary to measure a pressure of 760 mm Hg? The density of…

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Q: A 2.00 L steeel vessel contains 4.30 atm of nitrogen and 7.60 atm of hydrogen at 225 degrees C. What…

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Q: 10.0 g of Sn was added to excess HCl (aq) to form SnCl2 and H2 gas. If the volume of gas collected…

A:

Q: Xenon hexafluoride was one of the first noble gas compounds synthesized. The solid reacts rapidly…

A: Given that, XeF6 reacts with the SiO2 to form XeOF4 and SiF4. The reaction is shown XeF6 s + SiO2 s…

Q: A sealed container encloses a mixture of N2(g) and O2(g). The total pressure is 4.06 atm. The…

A: The first step is to convert the mass of N2 to moles. We can do this using the molar mass of N2,…

Q: A fuel cylinder for a camping stove contains 5.6 oz butane (C4H10), which produces 67.3 L of butane…

A: The balanced chemical reaction of the combustion of butane is as follows:The stoichiometry of the…

Q: 5. You are given 1.56 g of a mixture of KClO3 and KCl. When the mixture is heated the oxygen gas…

A: In the given question we have to calculate the percentage of KClO3 in the mixture,  first of all, we…

Q: A sample of a smokestack emission was collected into a 1.10-L tank at 742 mm Hg and analyzed. The…

A: In 100 g sample mass of CO2= 92 g  Mass of NO = 4.2 g  Mass of SO2 =1.3g Mass of H2O = 2.5g  Molar…

Q: A container holds a mixture of N2(g) and O2(g). The total pressure is 3.35 atm. The temperature is…

A: Given,total pressure of the gas mixture = 3.35 atmvolume of the container = 17.1 Ltemperature =…

Q: A 7.94 g piece of solid CO 2 (dry ice) is allowed to sublime in a balloon. The final volume of the…

A: Given: mass of CO2 = 7.94 g Volume of balloon = 1.00 L Temperature = 301 K molar mass of CO2 = 44.01…

Q: Water can be decomposed by electrolysis to hydrogen gas and oxygen gas. If 2.33 g of water is…

A: Given :  Mass of water = 2.33 g  Volume of flask = 1.00 L  Temperature = 25 °C = 298 K  Vapor…

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.