A very small helium-filled balloon has a volume of 351.6 mL. At the point you released the balloon, the pressure was 741.8 mmHg at 24.82ºC. What is the volume of the balloon (in liters) once it has ascended into the stratosphere where the pressure is 0.727 mmHg and a temperature of -52.3ºC?

Q: Calculate the density of He(g) (in g/L) at 27°C and 760mmHg .Density of air under these condition is…

A: We can calculate with the help of some farmula

Q: The density of air at STP is 1.2754 g/L. If your "250 mL" flask held 272 mL of water (also the…

A: GivenVolume of air in the flask = 272mLDensity of air = 1.2754g/L

Q: A gas filled balloon is having a volume of 2.50 l at 1.2 atm and 25 degrees C is allowed to rise to…

A: Ideal gas law states that the product of volume (L) and pressure (atm) is equal to the product of…

Q: A 750 mL balloon at 20 °C and a pressure of 800 mmHg is allowed to expand to 3250 mL and a pressure…

A:

Q: Consider the flask apparatus in the following diagram, which contains 2.00 L of H2 at a pressure of…

A: According to Dalton's law of partial pressure, the total pressure exerted by a mixture of gases is…

Q: How many moles of gaseous arsine (AsH3) occupy 0.0400 L at STP? What is the density of gaseous…

A: STP: STP stands for standard temperature and pressure which is used to calculate properties of gases…

Q: It is calculated that an experiment will yield 8.34 L of hydrogen gas at STP. If the actual…

A: STP means standard temperature and pressure, where the temperature is 0 0C or 273 K, and pressure is…

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

A:

Q: The concentration of Argon in the atmosphere is 9340 ppmv. Express this value in terms of the…

A: Given data: Concentration of argon in atmosphere=9340 ppmv 1.To find percentage of the atmosphere…

Q: A sample of hydrogen has a volume of 1.40 L at STP. What pressure would the sample have if the…

A:

Q: Calcium carbonate decomposes according to the equation CaCO3(s) ⟶ CaO(s) + CO2(g). What mass of…

A: Answer:- This question is answered by using the simple concept of calculation of mass of calcium…

Q: A 285-mL flask contains pure helium at a pressure of 743 torr A second flask with a volume of 470 mL…

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Q: A basketball is inflated to 9.0 psi above atmospheric pressure of 14.7. The diameter of the…

A:

Q: 5. What volume will 20.0 g of argon occupy at STP? 6. A sample of dry gas weighing 2.31 grams is…

A: [5.]  m = 20.0 g  M = 39.948 g/mol  n = m/M = 20.0 g / 39.948 g/mol  = 0.5006 mole  At STP, T = 273…

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: At 10.0C and 102.5 kPa, the density of dry air is 1.26 gL. What is the average "molar mass" of dry…

A: dear student, since you have asked multiple questions but according to guidelines we will solve 1st…

Q: A sample of nitrogen occupies a volume of 225 mL  at 45 oC  and 550 mmHg  of pressure. What will its…

A: Given data ; Volume of nitrogen(V) = 225 mL = 0.225 L Temperature(T) = 45°C = 318 K Pressure(P) =…

Q: A sample of hydrogen sulfide gas occupies 267 mL at 35°C and 0.850 atm pressure. What is its volume…

A: Given :  Initial pressure = 0.850 atm  Initial volume = 267 mL  Initial temperature = 35°C  To be…

Q: When 10.33 g of neon is combined in a 20.66 L container at 134oC with 8.59 g of argon, what is the…

A: Given: The given mass of Ne, = 10.33 g. The given mass of Ar, = 8.59 g. The volume of the container,…

Q: A sample of argon gas has a volume of 5.00 L at STP. If the pressure remains constant, at what…

A:

Q: When fully inflated, a hot-air balloon has a volume of 1.6 X 105 L at an average temperature of 375…

A: Given that volume of hot-air balloon, y =1.6×105 L Pressure, P = 0.975 atm Temperature, T = 375 K…

Q: A sample of oxygen gas occupies a volume of 3.00 L at 0.00 oC and 2.00 atm pressure. What volume, in…

A: Given data,Initial volume of O2 (V1)=3.00LInitial pressure of O2 (P1)=2.00atmFinal pressure of O2…

Q: A gas is contained in a metal cylinder with a piston, so that the volume of the cylinder can change.…

A:

Q: What pressure in atmospheres corresponds to 720.3mm Hg?

A: We have to convert the unit of given pressure (720.3 mmHg) from mmHg to atmosphere.

Q: Suppose a 3.00 L scuba tank is filled with about 29.7 moles of air at the ocean surface. If the tank…

A:

Q: How many miles of ozone occupy a volume of 3.36 L at STP?

A:

Q: Consider the flask apparatus in Exercise 85, which now contains 2.00 L H2 at a pressure of 360. torr…

A:

Q: One mole of hydrogen gas has a mass of 2.02 g. Use the molar volume value 22.6305 mol/L of hydrogen…

A: Given:Molar volume of hydrogen gas at STP = 22.6305 L/mol (i.e. volume of one mole of hydrogen…

Q: A student adds 4.00 g of dry ice (solid CO₂) to an empty bal- loon. What will be the volume of the…

A:

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: Titan's lower atmosphere is 94.2% nitrogen and 5.7% methane. The other 0.1% is composed of a…

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Q: At 4.256 °C and 2053 mm Hg, a gas occupies a volume of 17.27 L. What volume would it occupy at STP?…

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Q: A 2.50-L volume of hydrogen measured at -96 °C is warmed to 84 °C. Calculate the volume of the gas…

A: At constant pressure, the relation between temperature and volume is expressed using Charles Law.

Q: What is the mass (in grams) of a CO gas sample that occupies 5.77 L at STP?

A: Given: At STP The volume of the CO gas=5.77 L Mass of CO gas=? At STP: Temperature, T=273 K…

Q: A sample of hydrogen gas was collected over water at 21°C and 685 mm Hg. The volume of the collected…

A: The combined relation between gas laws is known as the ideal gas law or the gas equation. 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.