The air in a bicycle tire is bubbled through water and collected at 25oC.If the total volume of gas collected is 5.45L at a temperature of 25oC and a pressure of 745 torr. How many molecules of gas were in the bicycle tire? Assume 21% of the air is O2 and 78% is N2. (Hint: assume 100 g of air and use % to find grams of each gas then find moles of each. From that find mole fraction) molecules O2 ________________ molecules N2 ________________

Q: A certain gas sample has a volume of 225 mL at a pressure of 1.25 atm at 27oC; what would be its…

A: Given: P1 = 1.25 atm V1 = 225 ml P2 = 0.75 atm V2 = ? according to boyles at constant temperature.…

Q: A sample of nitrogen dioxide gas has a volume of 1.50 L at 23 o C. What volume, in L, will this gas…

A: According to Charles Law, at constant pressure change in the volume of a gas is directly…

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25.0 °C. With pressure and…

A:

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25.0 °C. With pressure and…

A:

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25.0 °C. With pressure and…

A: According to the Avogadro's law , the equal volume of gases contains equal number of molecules/mole…

Q: Sometimes in lab we collect the gas formed by a chemical reaction over water. This makes it easy to…

A: Given: Temperature = 35.0 oC. Volume of gas = 39.5 mL = 0.0395 L

Q: Part A: A sample of ideal gas at room temperature occupies a volume of 31.0 L at a pressure of 812…

A: part A Given :-  initial pressure = 812 torr  initial volume = 31.0 L  final pressure = 4060 torr…

Q: In a mixture consisting of two gases, the partial pressure of N2 (g) is 0.300 atm and the partial…

A:

Q: If the standard molar volume is 22.4 L at STP, how many moles of N₂O5 gas are needed to form 49.1…

A: Given : at stp , molar volume = 22.4 L       And NO2 produced = 49.1 L

Q: balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25.0 °C. With

A: Here we have to use the gas equation PV=nRT Here P and T are constant so V directly proportional to…

Q: A 2.08 gram sample of an unknown gas is found to occupy a volume of 2.13 L at a pressure of 504 mm…

A: According to ideal has law we can write,  PV = nRT Where  P = pressure of gas V = volume of gas n =…

Q: A sample of gas at 29.8ºC has a volume of 6.4 L and exerts a pressure of 762 mm Hg. How many moles…

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Q: A sample of N2 gas has 4.42 moles and occupies 1.06L at 25 degrees Celsius. What volume will it…

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Q: A balloon contains 50.0 L of CO2 at STP. What will be the mass of the gas inside the balloon?

A: At standard temperature and pressure,  T = 0 degree C = 273.15 K P = 1 atm V = 50.0 L (volume of…

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25 °C. With pressure and…

A: Given: Initial volume of balloon = 1.50 L Initial number of moles of gas = 3.00 mol Number of moles…

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

A: Ideal gas:-         A gas that follows Boyel's law, Charle's law and Avogadro's law strictly is…

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

A: Temperature = 45.0 oCVVolume of gas = 116 mL

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

A: For an ideal gas,    PV= nRT  Where Volume of a n mol of gas at temperature T and pressure P = V

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

A:

Q: A balloon contains 2.50 mols of CH4 gas with a volume of 25.0 L. What will the volume of the balloon…

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Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25 °C. With pressure and…

A: Avogadro's law states that " equal volume of all gases, at the same temperature and pressure have…

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25.0 °C. With pressure and…

A: Given information,   Initial volume (V1) = 1.50 L   Initial moles (n1) = 3.00 moles   Final moles…

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25.0 °C. With pressure and…

A: Given information as Volume (V1)= 1.50L Initial mole (n1) at 25 oC=3.00 mol After addition of 1.90…

Q: A boy with pneumonia has lungs with a volume of 2.0 L that fill with 0.085 mol of air when he…

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Q: A sealed flask contains 3.1 L of a gas at 2.4 atm and 22.7 °C. If the density of the gas is 9.7 g/L,…

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Q: A 7.45 L container holds a mixture of two gases at 11 °C. The partial pressures of gas A and gas B,…

A: To determine the partial pressure of the third gas by using the ideal gas equation, PV = nRTP =…

Q: A certain laser uses a gas mixture consisting of 7.00 g HCl, 4.00 g H2, and 167 g of Ne. What…

A: Total  pressure exerted is equal to sum of partial pressure of each gas . That can also be…

Q: A sample of gas at 33.9ºC has a volume of 10.3 L and exerts a pressure of 782 mm Hg. How many moles…

A: To solve this problem, we need the universal gas equation which is given as follows: PV=nRT Here, P…

Q: A sample of nitrogen gas collected at STP occupies a volume of 20.8 L. How many moles of gas does…

A: The volume occupied by one gram-mole of gas is about 22.4 liters  at standard temperature and…

Q: A sample of Carbon Dioxide gas (CO​ 2​ ) occupies a volume of 941 mL at a pressure of 748 torr and a…

A: Given :  Volume = V             = 941 ml = 941 /1000 = 0.941 L Pressure = P             = 748 torr =…

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25 °C. With pressure and…

A:

Q: A sample of gas contains 4.19 moles at 37.8 °C in a volume of 3.61 L. If 2.67 moles of gas are…

A:

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25.0 °C. With pressure and…

A:

Q: 12. How many moles of gas are there in a sample that has a volume of 767.5 mL at 767.5 K and 767.7…

A: 12. Given data, V = 767.5 mL = 0.7675 L T = 767.5 K P = 767.7 mm Hg R = 62.3637 L.mmHg/mol.K To…

Q: Ammonia gas and oxygen gas react to form water vapor and nitrogen monoxide gas. What volume of water…

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Q: A sample of gas in a cylinder has an initial volume of 40.0L and it has 1.7 moles of gas. The next…

A: Avogadro’s law, is a gas law which states that the total number of atoms/molecules of a gas (i.e.…

Q: A balloon is filled to a volume of 1.50 L with 3.00 moles of gas at 25.0 °C. With pressure and…

A: Interpretation -  To determine the volume of the gas (in L)  which is added in the balloons when a…

Q: A balloon is filled to a volume of 1.50 L with 2.50 moles of gas at 25 °C. With pressure and…

A: Given information is as follows: The initial volume of balloon V1= 1.50 L The initial moles of gas…

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.