A helium-filled balloon used in long-distance flying contains 420,000 ft3 (1.2  107 L) of helium. Suppose you fill the balloon with helium on the ground, where the pressure is 737 mm Hg and the temperature is 24 °C. When the balloon ascends to a height of 2 miles, where the pressure is only 600.0 mm Hg and the temperature is – 33 °C, what volume is occupied by the helium gas? Assume that the pressure inside the balloon matches the external pressure.

Q: If 5.0 moles of O2 and 3.0 moles of N2 are placed in a 30.0 L tank at a temperature of 25° C, what…

A:

Q: The mass of pure methane (CH4) gas has to be mixed with 70 g of pure CO so that the partial pressure…

A: As per our guidelines, we are supposed to do the first question. To get the answer to the second…

Q: Under constant-pressure conditions a sample of hydrogen gas initially at 88oC and    9.6 L is cooled…

A: Given values are, Initial temperature =T1=88°C = 88+273.15 K = 361.15 K Initial volume V1= 9.6 L…

Q: 2) A piece of dry ice (solid CO,) with a mass of 28.8 g sublimes (converts from solid to gas) into a…

A:

Q: A) A sample of ideal gas at room temperature occupies a volume of 40.0 L at a pressure of 542 torr .…

A: Boyle’ law states that at a particular temperature and number of moles, the pressure of a gas is…

Q: A sample of gas occupies 3.8 L at 15 degrees Celsius and 1.00 atm. What does the temperature need to…

A: Here given, Initial volume (V1) = 3.8 L Initial pressure (P1) = 1 atm Initial temperature (T1) = 150…

Q: Consider a 1.53-L sample of gaseous SO2 at a pressure of 5.6 x 103Pa. If the pressure is changed to…

A: At constant temperature: P1V1 = P2V2 P1 = initial pressure; V1 = initial volume; P2 = final pressure…

Q: 4. The temperature of a sample of gas in a steel container at 30.0 kPa is increased from -100.0 °C…

A:

Q: A sample of methane, CH4, occupies a volume of 318.0 mL at 25°C and exerts a pressure of 1010.0…

A: Answer: pressure of gas is 0.55 atm or 417.99 mmHg

Q: A sample of an ideal gas at 1.00 atm1.00 atm and a volume of 1.28 L1.28 L was placed in a weighted…

A: according to boyl's law at constant temperature pressure is inversely proportional to volume

Q: A helium-filled balloon of the type used in long-distance flying contains 490,000 ft^3 (1.4 x 10^7…

A:

Q: A 36.0–L cylinder of a gas used for calibration of blood gas analyzers in medical laboratories…

A: The ideal equation for gas is given by,                                               PV = nRT…

Q: A sample of a gas was confined in a cylinder fitted with a movable piston. At 20.0 °C, the gas…

A: T1=20.0°C=(20.0+273.15)K=293.15K V1=7.104L P1=1.128 atm T2=99.9°C=(99.9+273.15)K=373.05K P2=5.0 14…

Q: The density of a gaseous compound was found to be 1.23 g/L at 330 K and 150 Torr. What is the molar…

A: Given, The density of a gaseous compound was found to be 1.23 g/L at 330 K and 150 Torr. The molar…

Q: A container with volume 1.48 L is initially evacuated. Then it is filled with 0.226 g of N2+. Assume…

A:

Q: A high altitude balloon is filled with 1.41 x 104 L of helium gas at temperature of 21 oC and 1.00…

A: For part a): According to Ideal gas equation: PV=nRT 1 x1.41 x 104 =n x 0.0820 x (273+21)…

Q: What is the mass of neon that exerts a pressure of 720. mmHg, with a temperature of -15.0 °C, when…

A: Neon is an ideal gas. To get the mass of neon, use ideal gas equation. Ideal gas equation…

Q: Based on the reaction 2 Ag2O(s) → 4 Ag(s) + O2(g), how many grams of silver oxide must have reacted…

A:

Q: In any of the equation forms of the Ideal Gas Law, IGL, pressure must always be in what unit?  a…

A: It totally depends on that the given gas constant is taken in which unit . We should take pressure…

Q: Sulfur trioxide, SO3, is produced in enormous quantities each year for use in the synthesis of…

A:

Q: What is the temperature, in degrees Celsius, of 2.50 moles of neon (Neon) gas confined to a volume…

A:

Q: If 19.91 g of CO2 is enclosed in a 1.98 L container at 60.5 °C, what pressure is it exerting on the…

A:

Q: gas mixture contains O2, N2, and Ar at partial pressures of 125, 175, and 225 mm Hg, respectively.If…

A: In this question, we want to determine the Partial pressure of CO2 gas When total pressure and…

Q: 2. You have a 965 mL sample of methane at 92°C and a pressure of l.29x10° torr. A. How many moles of…

A: Volume of methane = 965 mL = 0.965 L Temperature = 92 oC = 273.15 + 92 = 365.15 K Pressure = 1.29 x…

Q: Helium-filled balloons are used to carry scientific instruments high into the atmosphere. Suppose…

A: Helium-filled balloons are used to carry scientific instruments high into the atmosphere. Suppose…

Q: What is the pressure in kilopascals of 1.926 x 10-6 moles of helium gas, if it occupies a volume of…

A: Ideal behaved gas and pressure calculation using ideal gas equation

Q: If a sample of helium gas at 900 torr and 25°C is allowed to expand from 2.6 L to 5.8 L without…

A: Helium exert a pressure of 403.45 torr.

Q: 1.If you are asked to calculate the volume of Carbon dioxide gas at 25oC and 802 torr that could be…

A: We have given the Carbon dioxide gas Temperature =T= 25°C  Pressure = P=  802 torr  V = volume of…

Q: Chlorine can be prepared in the laboratory by the reaction of manganese dioxide with hydrochloric…

A: Given the chemical reaction for the prepration of chlorine as…

Q: If 15.0 liters of neon at 25.0oC is allowed to expand to 45.0 liters, what must the new temperature…

A: Ans

Q: What would be the total pressure of a container that is holding SO2(g) with a pressure of 1.385 atm,…

A: The sum of partial pressure is equal to the total pressure of the system in accord with Dalton's law…

Q: If a cylinder contains 10.0 g of CO 2 in 10.0 L at 325 K, what is the pressure?

A: Given, a cylinder contains 10.0 g of CO 2 in 10.0 L at 325 K

Q: When a 222.3 mL sample of nitrogen is kept at a constant temperature of 5.0 °C, it has a pressure of…

A: Given data, Initial volume (V1) = 222.3 mL = 0.2223 L Temperature = 5oC Initial pressure (P1) =…

Q: 3) 1.11 x 103 moles of nitrogen gas are contained in a 400. mL container at 25.1 °C. If the…

A:

Q: When 40.0 litres of oxygen gas at 20.0 (degrees Celsius) is compressed to 3.00 litres, what must the…

A:

Q: After blowing up a balloon, a student was curious what the partial pressure of each gas was in the…

A: Partial pressure of a gas in a mixture is the pressure exerted by that gas when it occupy the total…

Q: Synthetic diamonds can be manufactured at pressures of 6.00 x 10 4 atm. If we took 2.00 liters of…

A:

Q: A person accidentally swallows a drop of liquid oxygen, O2 (l), which has a density of 1.149 g/mL.…

A: Given: The density of oxygen=1.149g/mL The Volume of oxygen=0.050mL Calculate the mass of the drop…

Q: If the temperature of 179.6 L of a gas at 64.9 C falls by 7.2 C, what is the new volume of the gas…

A: We know, at constant pressure; V1 / T1 = V2 / T2 where, V1 = initial volume T1 = initial temperature…

Q: f the volume of the original sample in Part A (P1 = 832 torr , V1 = 26.0 L ) changes to 60.0 L ,…

A: Given : P1 = 832 torr , V1 = 26.0 L  P2 =? , V1 = 60.0 L

Q: What pressure permits 25.0 cm3 of neon at 735 mmHg to expand to a volume of 40.0 cm3?

A: The initial volume of neon, V1=25.0 cm3 The initial pressure of neon, P1=735 mmHg The final volume…

Q: What is the pressure in the room, if the 275 ml flask contains 46.2 grams of oxygen at 88.5.F, and…

A: We can apply ideal gas equation here, That is, PV = nRT Where, P = pressure inside flask V = volume…

Q: What is the new volume (in L) of an 34.7 L sample of carbon monoxide, CO, if the pressure changed…

A: In accordance with Boyle's law, the pressure of the gas varies inversely with the volume of the gas,…

Q: What pressure was exerted on the inflated beach ball for it to change its volume from 25.0-liters at…

A:

Q: A sample of nitrous oxide (N2O) gas at 298.15 K is heated to 373.15 K and also allowed to expand…

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

Q: A 10.0 L sample of CO2 gas at 25.0 degrees celsius is heated at a constant pressure until the volume…

A: Given, Initial Volume = 10.0 L Initial Temperature = 25.0°C  Final volume = 20.0 L  Final…

Q: oxide of nitrogen, believed to be NO or N2O, is placed in a rigid flask with volume 1.07 L. If the…

A: The solution is as follows :

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.