Practice: 1. A helium-filled balloon has a volume of 50.0 L at 25°C and 1.08 atm. What volume will it have at 0.855 atm and 10°C? 2. A 700. mL, gas sample at STP is compressed to a volume of 200. mL, and the temperature is increased to 30.0°C. What is the pressure of the gas in Pa? 3. The volume of a gas is 27.5 mL at 22.0°C and 0.974 atm. What will the volume be at 15.0°C and 0.993 atm?

Q: What is the molar mass of a 10.21 grams of a gas that has a pressure of 5.48 atm, a volume of 849 mL…

A: To solve this question, use the formula of ideal gas law which is given as follows:- PV = nRT…

Q: A sample of Neon gas was stored in a container at a temperature of 10.25°C and a pressure of 1.25…

A: Given data, Temperature=10.25oC Pressure=1.25atm

Q: What is the volume of 2.00 moles of nitrogen gas (N2) at STP, if nitrogen gas at 0.500 mol will…

A:

Q: UTOR Using the Ideal Gas Law to Calculate Molar Mass A 1.86-g sample of an unknown gas has a volume…

A: The gaseous state is the state of matter with least intermolecular force of attraction between…

Q: What volume (in liters) will 1.30 moles of gas occupy at 22.0oC and 2.50 atm pressure?   Group of…

A:

Q: What is the volume of 0.25 moles of a gas at 72.7 kPa and 15C?  a) 0.081 L b) 0.12 L c) 0.43 L…

A: Given that : Moles of gas(n) = 0.25 moles Pressure of gas(P) = 72.7 kPa = 0.717 atm Temperature(T) =…

Q: 10. One liter of sulfur vapor, Sg, at 600°C and 1.00 atm is burned in excess pure oxygen to give…

A: Given , Volume of S8 (V) = 1.0 L Temperature (T) = 600 °C = (600+273.15)K = 873.15 K Pressure (P) =…

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right).…

A: Given,  Temperature, T = 50 °C = (50+273) = 323 K  Volume, V = 26.2 ml = 0.0262 L  Pressure, P = 1…

Q: A typical helium weather balloon has a volume of 75.0 liters at 25oC and 720 mm Hg.  Suppose the…

A: Given: Initial volume of balloon is 75.0 L. Initial pressure is 720 mmHg. Initial temperature is…

Q: 7) Gas in a balloon occupies 5.5L at 300.0K. The balloon is dipped into liquid Nitrogen at a…

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Q: 1.50 moles of a gas in a sealed balloon at STP are heated to 350. K. The final pressure of the gas…

A:

Q: For each of the following sets of pressure/volume data, calculate the new volume of the gas sample…

A: When, temperature and number of moles of gas are constant, then Boyle’s law is applicable which…

Q: Calculate the volume that 905.7 g of silicon tetrafluoride (SİF4) gas occupies at a temperature of…

A:

Q: A sample of He gas occupies 12.4 L at 23°C and 0.956 atm. What volume will it occupy at 40°C and…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant =…

Q: Magnesium burns in air to produce magnesium oxide, , and magnesium nitride, . Magnesium nitride…

A: The reaction taking place can be written as, => Mg3N2 + H2O --------> MgO + NH3  Balancing :…

Q: Magnesium burns in air to produce magnesium oxide, , and magnesium nitride, . Magnesium nitride…

A: Stoichiometry , in balanced chemical reaction defines the ratio at which reactants are reacting to…

Q: 2. Determine the molecular weight (molar mass) of gases at STP which have densities C a. 0.090 g/L…

A: At STP -> T = 273 K P = 1 atm

Q: What is the volume of the weather balloon under these conditions

A: Combined gas law is a mathematical expression. This expression is related to pressure, volume and…

Q: Cl2< Ar < HCI Ar <Clh < CHa

A: Answer: increasing order of average velocity in the Ar , Cl2, CH4 , HCl   Average velocity is…

Q: 1) If a sample of gas is heated from 100◦C to 300◦C at constant pressure, the volume will ____ by a…

A: Answer :-  1) (a) increase; about 1.5…

Q: 9) A gas is heated from-10.15°C to 24.85°C and the volume is increased from 24.0 liters to 35.0…

A: For the phase change of the ideal gas the temperature, pressure, and volume of the initial state and…

Q: A 420.0ml volume of O2 gas is collected over water at 24*C and 750.0 Torr. The gas weighs 0.534g.…

A: The gas(O2) initially has volume of 420.0 mL, temperature of 24 oC(297 K), and pressure of 750.0…

Q: You want to store 165 g of CO₂ gas in a 15.3-L tank at room temperature (25 °C). Calculate the…

A: Consider the given information as follows; Mass of CO2 = 165 g Volume of the tank (V) = 15.3 L…

Q: A sample of gas has an initial volume of 324.42 mL and an initial temperature of 729.45 K. What the…

A: Given: The initial volume, (V1)=324.42 mL=0.32442 L. The final volume, (V2)=560.71 mL=0.56071 L..…

Q: A gas sample has an original volume of 585 ml when collected at 768 mm and 32"C. If a change is made…

A: INITIAL VALUES                      FINAL VALUESP1=768mm Hg                         P2=0.95atm=722mm…

Q: Calculate the final pressure, in atmospheres, for each of the following, if volume and amount of gas…

A: According to ideal gas law PV  = nRT  where P = pressure  V = volume  n = moles of gas R = gas…

Q: Use the References to access important values if needed for this question. A 2.18 gram sample of an…

A: According to ideal gas law, PV = nRT where P = pressure of gas in atm  V = volume in L n = moles R =…

Q: Bob has a balloon with 1250 ml of air in it at 1.14 atm of pressure and 25°C. If he releases the…

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Q: (see sketch at right). This makes it easy to isolate and measure the amount of gas produced.…

A:

Q: A sample of a certain gas has a volume of 452 mL at 711 mm Hg and 26 °C. What would be the volume of…

A: Given: Volume V1= 452 mL Pressure P1 = 711mmHg= 711/760= 0.935 atm Temperature T1 = 26oC= 26+ 273 =…

Q: 11. A sample of hydrogen gas made in a lab is at 774 mmHg and 18.0°C. It is determined that there is…

A: 11.  The volume of the gas has to be calculated, Pressure =774 mm Hg(1.01 atm) Temperature=180C.(291…

Q: collected Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch…

A:

Q: A sample of gas collected at 52℃ and 650mmHg occupies a volume of 3.20L. What volume would this gas…

A: Initial Temperature of sample = T1 = 52°C = (52 + 273.15) K =325.15 KInitial Pressure of sample = P1…

Q: gas at 20.5 C and 64.1 torr occupies a volume of 27.9 L. What will the gas pressure be if the volume…

A:

Q: 1. A sample of oxygen gas has a volume of 150.0mL when its pressure is 0.947 atm. What will the…

A: Given  1) Initial Volume ( V1 )    = 150 mL      Initial Pressure ( P1 )   = 0.947 atm       Final…

Q: A mixture of helium and argon gases is maintained in a 9.62 L flask at a pressure of 3.08 atm and a…

A: Given, Volume of flask = 9.62 L Pressure = 3.08 atm Temperature = 56°C = 56+273 = 329K Mass of He…

Q: C. Identify the gas.

A:

Q: A sample of gas occupies a volume of 648 mL at 1.28 atm and 56 oC. Calculate the temperature of the…

A: Volume=648mL P1=1.28atm T1=56°C P2=1.41atm T2=?

Q: How many balloons of 4.00-L capacity can be filled with hydrogen at a pressure of 1.00 atm and 27°C…

A: The number of balloons can be calculated the number of moles of gas filled in one balloon and the…

Q: mass

A:

Q: 7. If all the gas in a argon tank containing 425g of Ar is used to fill balloons with an average…

A:

Q: 3. The plunger on a bicycle pump with a 400.0 mL volume cylinder is depressed such that the pressure…

A: Given that -  Volume of cylinder on a bicycle pump, initially = 400.0 mL  Initial pressure = 1.00…

Q: 5. What pressure, in atmospheres, will be exerted by 0.5 moles of a gas contained in a 2.4 Liter…

A: These type of questions are based on the ideal gas equation which is: PV = nRT Note: units should be…

Q: A syringe contains a sample of air at room temperature and pressure. Assuming no leaks in the…

A: Since there are multiple questions, we will answer only first one. If you require the answers to the…

Q: O A sample of a certain gas has a volume of 452 mL at 711 mm Hg and 26 C. What would be the volume…

A: A sample of certain gas has a volume of 452 mL at 711 mmHg and 26°C.We have to find the volume of…

Q: A gas tank containing an air mixture of helium, nitrogen and oxygen has a total pressure of 45.0…

A: According to Dalton's law of partial pressure, the total pressure of the gas mixture is equal to 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.