A weather balloon contains 68.5 g of helium (He) gas. Calculate the volume (in L) of the balloon at 0.988 atm and 18°C.

Q: A sample of carbon dioxide is contained in a 500.0500.0 mL flask at 0.9760.976 atm and 15.615.6 ∘∘C.…

A: Given, Volume of the flask = 500.0 ml = 0.5 L pressure = 0.976 atm Temperature = 15.6 C° = (15.6 +…

Q: How many grams of helium are needed to fill a balloon to a volume of 5.0L at 22 degrees celsius and…

A:

Q: Calculate the number of moles of carbon monoxide found in a sample that occupies 0.35 L at 17…

A: We have given that   Volume of CO = V= 0.35L  Pressure of CO = P= 12atm Temperature of CO = T=…

Q: What mass of an oxygen gas will occupy a 7.25 L container at 14°C and 760 mmHg?

A: Given that: Volume of gas = 7.25 L Temperature (T) = 14°C = 287 K Pressure (P) = 760 mm Hg = 1 atm…

Q: The density of a gas at STP is found to be 2.8 g/L. What is the formula of the gas?

A: Concept:  As we know that density is defined by ratio of mass to the valume. Density = molar mass/…

Q: Calculate the density of nitrogen dioxide gas at 765 Torr and 20oC.

A: Given: The pressure of N2, (P) = 765 Torr = 1.006 atm. The temperature of N2, (T) = 20oC = (273+20)…

Q: The Goodyear blimps, which frequently fly over sporting events, hold approximately 175,000 ft3 of…

A: Given,Mass of the gas = 175,000 ft3 of heliumPressure = 1 atmTemperature = 23 oC = 273.15 +23 =…

Q: volume

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Q: How many moles of chlorine gas at 120. °C and 33.3 atm would occupy a vessel of 26.5 L?

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

Q: Pantothenic acid is a vitamin. Using the Dumas method, you find that a sample weighing 61.6 mg gives…

A: Given information,       A sample weighing 61.6 mg gives 3.30 mL of nitrogen gas at 23°C and 785…

Q: What is the density (in g/L) of oxygen gas at 77.0 °C and 700.0 torr?

A: Number of moles = given mass / molar mass   PV = nRT PV =w/m RT P = w/v RT/m P = f * RT/ m f =…

Q: Calculate the density of sulfur hexafluoride gas at 707 torr and 21 degrees C.  Calculate the molar…

A: Given : Case I : Pressure for sulfur hexafluoride = 707 torr Temperature = 21 C Case II : Dansity =…

Q: If the density of a gas is 1.2 g/L at 745. Torr and 20 C. What is its molecular mass

A: From Ideal gas equation it is known that------- pV = nRT where p is the pressure , V is the volume…

Q: Calculate the density of argon gas at 23.0 oC and 784 torr.

A: Given, Temperature of Ar gas = 23.0oC = 296K. Pressure of Ar gas = 784torr.

Q: Calculate the density of NO2 gas at 0.940 atm and 32 ∘C. Calculate the molar mass of a gas if 2.30 g…

A: Calculation for density:

Q: Calculate the density of fluorine gas (in g/L) at 35.0∘∘C and 785mmHg.

A: The question is based on the concept of physical chemistry. We have to calculate density of fluorine…

Q: Calculate the molar mass of a gas at 388 torr and 45oC if 206 ng occupies 0.206 μL.

A: The molar mass of a gas at 388 torrs and 45oC if 206 ng occupies 0.206 μL has to be calculated,

Q: A container with a volume of 371 L contains how many moles of Oz at STP?

A: Given  Volume = 371 L  Number of mole of O2 = ?

Q: Calculate the mass of chlorine gas in a 11.7L container at 499.0K and 0.534 atm

A:

Q: A 0.850-mole sample of nitrous oxide, a gas used as an anesthetic by dentists, has a volume of 20.46…

A: Since, number of moles of gas are constant. So,  P1V1/T1 = P2V2/T2 Given that: P1 = 1.35 atm, V1 =…

Q: Calculate the volume of 525 g of O2 at 25.7 torr and 25 degrees celsius.

A:

Q: A sample of sulfur dioxide occupies a volume of 652mL at 40 degrees Celsius and 0.947 atm. What…

A: According to the ideal gas law, we know that PV = nRT If we consider the law for two different…

Q: What volume does 15.0g sample of helium (He) gas at 25C and 1.66 atm occupy?

A: Calculate the number of moles of He gas nHe = WHeMHenHe = 154 molnHe = 3.75 mol   Here, n stands for…

Q: Calculate the density of propane gas at 780 torr and 40 0C.

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

Q: In 1783, Jacques Charles launched his first balloon filled with hydrogen gas, which he chose because…

A: Given data is as follows: The volume of the balloon = 32000 L The mass of hydrogen gas needed to…

Q: Calculate the volume, in milliliters, of 0.00600 mol of a gas at 31 degrees Celsius and 661 mmHg.

A: Ideal gas equation:                                PV=nRT Where, P = Pressure (atm) V = Volume (L) n…

Q: How many grams of nitrogen gas are present in a 10.0 L vessel at 19°C and 1.60 atm?

A:

Q: An anaesthetic gas contains 64.81% carbon, 13.60% hydrogen, and 21.59 % oxygen by mass, If 2.00 L of…

A: Given: Volume of gas = 2.0 L Temperature = 25 oC Pressure = 0.420 atm mass =2.57 g % of carbon =…

Q: How many moles of chlorine gas at 120. °C and 33.3 atm would occupy a vessel of 13.5 L?

A: The number of moles of chlorine can be calculated by using the ideal gas equation,

Q: A backpacker carries an empty, soft-plastic, water container into the mountains. Its initial volume…

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

Q: A sample of dry gas weighing 3.1134 grams is found to occupy 3.650 L at 22.0°C and 740.0 mmHg. How…

A: We have to predict the moles of the gas .

Q: 18. When heated, gaseous ammonia will react with oxygen gas to produce nitrogen monoxide gas and…

A:

Q: A sample of fluorine gas occupies 865 mL at 730 mmHg and 170 °C. Part A What is the mass of the…

A:

Q: Calculate the density of NO2 gas at 0.970 atm and 35C.

A: Using the ideal gas equation, the density of given NO2 is determined.

Q: Calculate the mass in grams of 3.55 L of NO gas at temp 52 C and 874 mmhg

A: By combining three laws Boyle’s law V ∝ 1/P   (constant T and n)       eqn i) Charle’s law V ∝ T…

Q: How many moles of N2(g) gas are contained in 3.83 L at 59.0 °C and 852 mmHg?

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Q: Calculate the density of sulfur hexafluoride gas at 410 torr and 34 °C.

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

Q: How many grams of carbon dioxide gas are there in a 45.1 L container at 34.0°C and 1.04 atm?

A: Ideal Gas Law :-  PV = nRT  P is the pressure of gas  V is the volume occupied by gas n is the…

Q: What volume will 150 ml of gas at 23 Celsius and 710 torr occupy at STP?

A:

Q: 1. A compound has an empirical formula of CH2 O and a molecular mass of 60 amu. What is the…

A: Two questions one regarding molecular formula and second regarding volume of a gas at STP are to be…

Q: A sample of gas with a mass of 1.020 g occupies a volume of 762 mL at 0 °C and 1.00 atm (STP). What…

A: The ideal gas equation is written below.PV = nRT         ….. (1)                Here, P is the…

Q: 0.101 L of gas at 760. torr is compressed to 800. torr.  Calculate the resulting gas volume in mL at…

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

Q: A gas at 34C and 1.75 atm has a density of 3.4 g/L. Calculate the molar mass of the gas?

A: The ideal gas equation is given by,                               PV = nRT Where, P is the pressure…

Q: 0.601 L gas at 7.60 torr is compressed to 800 torr. Calculate the resulting gas volume in mL at…

A: Initial volume of gas, V1=0.601 L = 0.601 x 1000 =601 mL InitialPressure, P1=7.60 torr   Final…

Q: A sample of oxygen gas has a volume of 3.24 L at 31°C. What volume will it occupy at 147°F if the…

A:

Q: Calculate the number of moles and the mass of gas in 2.50 l of ar at stp

A: Given: Volume of Ar is 2.50 L

Q: How many moles of oxygen gas will occupy a volume of 2.5L at 1.2 atm and 25 degrees Celsius?

A: Using ideal gas equation, we have P*V=n*R*T --------(1)  Where, P is pressure  V is volume, n is…

Q: If gas X has a density of 4.98 g/L at STP, what is the molar mass of gas X?

A: From ideal gas equation  P V = n R T                  n= mol= mass/molar mass P V = (w/M) R T  P M =…

Q: how many moles of CO are contained in a 5.00 L tank at 155 degrees C and 2.80 atm?

A:

Q: (a) Calculate the density of sulfur hexafluoride gas at 707 torrand 21 °C. (b) Calculate the molar…

A:

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.