The density of air at STP is 1.2754 g/L. If your "250 mL" flask held 272 mL of water (also the volume of air it would contain), calculate the mass of air in the flask under STP. 1.

Q: oxygen can be generated in the laboratory by heating potassium chlorate until it it decomposes. what…

A: The potassium chlorate is heated in laboratory to generate oxygen.   2KClO3 (s)→2KCl (s) + 3O2 (g)…

Q: What is the mass (in g) of 273 mL of sulfur trioxide measured at STP?

A: Given: at STP  Temperature = 273 K pressure = 1 atm volume = 273 mL = 0.273 L molar mass of SO3 =…

Q: At what altitude does the atmospheric pressure drop from 760 Torr to 560 Torr at 25°C? (Molecular…

A: Given, initial pressure =760 torrand final pressure =560 torrtemperature =25 °Cmolecular weight of…

Q: The Ozone gas at STP contains (6.022 x 10^23) molecules. O Flase O True

A: Solution : The fomula of ozone gas is O3. STP means Standard Temperature pressure. The conditions of…

Q: What is the mass (in g) of 486 mL of sulfur trioxide measured at STP?

A: The conditions at STP are temperature of 273.15 K (0°C or 32°F) and pressure of 105 Pascal or 1 bar

Q: How many molecules of sulfur trioxide would react with 68.9 liters of water at STP?

A: Applying concept of mole at STP.

Q: 2 L of a gas is collected at 25 °C and 745 mmHg. What will the volume be at STP?

A: EXPLANATION:  STP is defined as standard temperature and pressure.At STP,Temperature=0.0 degree…

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: Place the following gases in order of increasing density at STP. O 2 NH 3 N 2O 4 Ar

A: Given, O2, NH3, N2O4, Ar

Q: What is the volume occupied by 3.00 mol of hydrogen gas at STP?

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: Determine the volume, in liters, of 1.65 mole of NO2 gas at STP

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Q: Calculate the molar mass of a gas that has a density of 1.70 g/L at STP

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Q: What volume will be occupied by 8.00 g of oxygen, O2, at STP?

A: The moles of Oxygen is calculated as follows,

Q: How many helium (He) gas molecules are present in a balloon with a volume of 1.5L at STP?

A:

Q: 7) The density of Cl2gas at STP, in grams per liter, is approximately: (а) 1.3 (b) 3.9 (c) 4.5 (d)…

A: d) 3.2 We know that,  Molar mass of Cl2 gas = 70.906 g Volume of 1 mole of Cl2 gas at STP = 22.4 L

Q: Enter your answer in the provided box. A gas at 737 mmHg and 37°C occupies a volume of 9.56 L.…

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Q: If there are 27 grams of nitrogen dioxide at STP, how many liters does this occupy?

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

A:

Q: How many grams of C3H8 gas are present in 945 mL at STP?

A: Interpretation - To determine the grams of C3H8 gas are present in 945 mL at STP.    Concept-  To…

Q: What would be the molar mass of a gas for which 2.43 x 10-2g occupies a volume of 7.68 mL at STP?

A: Given that, volume of gas at STP, V = 7.68 mL = 0.00768 L Mass of gas at STP, m = 2.43×10-2 g Molar…

Q: A gas sample at 85.3oC and 920 mm Hg pressure has a volume of 2.76 L. What is the volume of the…

A:

Q: Imagine that you have two identical containers, one containing hydrogen at STP and the other…

A: Interpretation: The two identical containers, one containing hydrogen at STP and the other…

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: What is the volume, in L, of 86.6 grams of N3O3 gas at STP?

A: Given : mass of N3O3 = 86.6 g Since molar mass of N3O3 = Atomic mass of N X 3 + Atomic mass of O X 3…

Q: 4. At temperature 500 °C, what is the volume of occupied 4.2 grams carbon dioxide gas at STP?

A: Number of moles is calculated by dividing given mass with molecular mass.

Q: The density of air at STP is 1.285 g/L. Which of the following cannot be used to fill a balloon that…

A: Given that ,  Density of air at STP = 1.285 g/L At STP , Temperature (T) = 273.15 K Pressure (P) = 1…

Q: A nitrogen sample occupies 236 mL at STP. If the same sample were collected over water at 25°C and…

A:

Q: A sample of oxygen gas occupies a volume of 400 mL at 50oC and 250 mmHg of  pressure. What will its…

A: Ideal gas equation is used to solve this by using the formula :-  P1 V1 ÷ T1 = P2 V2 ÷ T2

Q: Ammonia gas breaks down into hydrogen and nitrogen. If 8.5 L nitrogen is formed at STP, how many…

A: Decomposition of ammonia produce nitrogen and hydrogen gases. Given values -> Volume of N2 gas =…

Q: Calculate the number of moles of carbon dioxide gas present in a 2.002.00 L flask at STP.

A:

Q: A sample of gas is found to occupy 250.0 mL under laboratory conditions of 27 C and 740.0 mmHg. What…

A: At given conditions Volume of gas (V) = 250.0ml = O.25L Temperature (T) = 27°C = 300.15K Pressure…

Q: What volume, in liters, does 27.946 g of oxygen gas occupy at STP?

A: Given in the question, Mass of oxygen = 27.946 gm Conditions = STP As we know that 1 mole of any…

Q: What is the volume, in L, occupied by 3.260 moles of NO2 gas at STP conditions?

A: Given, At STP, Temperature (T) = 273 K Pressure (P) = 1 atm, Rate constant (R) = 0.0821 atm.L/mol.K…

Q: What is the mass of hydrogen gas (RMM=2) that occupies volume of 35 L at STP?

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Q: What is the volume (liters) of 23.5 g of I2 at STP?

A:

Q: 10. The volume of nitrogen, collected over water, is 247 mL at 25°C and 700.0 torr. Calculate the…

A: Using ideal gas equation , PV=nRT And at STP , T=273 K , P= 760 Torr V=??

Q: What is the mass (in g) of 227 mL of sulfur trioxide measured at STP?

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

Q: 12. Calculate the molar mass of a gaseous substance if 0.158 g of the gas occupies 31.7 mL at STP.

A: A numerical problem based on mole concept, which is to be accomplished.

Q: g/mol. The molecular weight of a gas that has a density of 4.1 g/L at STP is

A:

Q: If 500, mL of hydrogen gas has a pressure of 456 torr at 23 C, what would be the volume at STP? OA.…

A: The ideal gas equation is given by,                                                        Where,…

Q: What is the mass of a sample of chlorine gas that occupies a volume of 2.500 L at STP? 1) 1.295 g O…

A: One mole of any gas under STP conditions will occupy a volume of 22.4 L For example : 1 mole of…

Q: What is the mass of CH4 in a sample that occupies a volume of 16.5 L at STP?

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Q: A student decomposes KClO3 and collects 36.5 cm3 of O2 over water at 23 Celcius. The laboratory…

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Q: What is the molecular mass of a gas if 3.5 g of the gas occupies 2.1 L at STP?

A: A numerical problem based on gas law, which is to be accomplished.

Q: What is the density of NO2(g) at STP?

A: Given molecule is : NO2

Q: If there are 1.4 x 103 mg of chlorine gas at STP, how many liters does this occupy?

A: 1 mole of an ideal gas occupy 22.4 liters volume at STP. Volume of gas at STP = number of moles of…

Q: What is the mass (in g) of 339 mL of sulfur trioxide measured at STP?

A: Given information: Volume = 339 mL

Q: A gas has a volume of 0.500 L at 752 mm Hg and 37oC. What is its volume at STP?

A: