A helium-filled weather balloon has a volume of 658 L at 16.9°C and 752 mmHg. It is released and rises to an altitude of 8.42 km, where the pressure is 296 mmHg and the temperature is -34.1°C. The volume of the balloon at this altitude is L.

Q: What is the density of a sample of argon gas at 55°C and 765mmHg?a) 2.99 g/L b) 1.13 * 103g/Lc) 1.49…

A: The given problem can be solved by using the formula as:  dRT=PM…

Q: The combustion of octane, CgH18, proceeds according to the reaction shown. 2C,H18(1) + 25 O,(g) 16…

A: Given, Moles of C8H18 = 562 mole Pressure of CO2 = 0.995 atm Temperature of CO2 = 11.0°C  Volume of…

Q: A 275 L helium balloon is heated from 20 °C to 40 °C. Calculate the final volume assuming the…

A: Given details, V1 = 275 L T1 = 20 °C = 293 K T2 = 40 °C = 313 K To calculate the final volume.

Q: 10. LiOH is used to condition air in spacecraft by absorbing the carbon dioxide exhaled by…

A: According to the balanced equation, 2 moles LiOH can absorb 1 mole CO2.  We can convert the mass of…

Q: The oxygen gas formed in a chemical reaction is collected over water at 30.0∘C. The collected gas as…

A: Both oxygen gas and water vapors are collected above the water.

Q: The combustion of octane, C,H8, proceeds according to the reaction shown. 18' 2 C,H18(1) + 250,(g) –…

A:

Q: A car engine it is powered by the burning of octane (C8H18) with oxygen (O2). The combustion…

A: Given that the combustion reaction of octane (C8H18) with oxygen (O2) form carbon dioxide (CO2) and…

Q: A weather balloon is inflated to a volume of 24.5 L at a pressure of 750 Torr and a temperature of…

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

Q: A gas-filled weather balloon with a volume of 65.0 L is released at sea-level conditions of 745 torr…

A: According to the ideal gas equation, PV = nRT where P, V, n, R and T are the pressure, volume,…

Q: 9. A combustion reaction involving 628.0 g n-butanol (C,H100) occurs at 345.0 °C and 15.2 atm. What…

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

Q: Two bulbs are connected by a stopcock. The 4.50 L bulb contains nitric oxide (NO) at a pressure of…

A:

Q: A 4.000 L sample of nitrogen gas at 25.00°C and 760.0 mmHg is heated to 500.0°C, with a constant…

A: Initial Pressure ( P1 )        = 760 mmHg Initial Temperature ( T1 ) = 25 ℃…

Q: A particular balloon is designed by its manufacturer to be inflated to a volume of no more than…

A:

Q: After dissolving an unknown tablet in water, the tablet dissolves and liberates a gas. Suppose at 1…

A: Given that:            Volume of gas (V) = 360 mL = 0.360 L               Temperature (T) = 20℃ =…

Q: Aluminum, an active metal, reacts with hydrochloric acid in a single displacement reaction.  If I…

A: The reaction taking place between is,

Q: What volume of oxygen gas is produced

A:

Q: If 0.370 L of neon gas is collected over water at a temperature of 60°C and a pressure of 760 torr,…

A: GIVEN: The volume of Neon gas collected over water= 0.370 L Temperature =60°C  Pressure = 760 torr…

Q: A sample of nitrogen occupies 945 mL at a temperature of 26 °C and a pressure of 85.0 kPa. What…

A: PV = nRT Volume of gas at STP = n x 22.4 L

Q: Burning one mole of propane in a gas grill adds 132 g of carbon dioxide (CO 2) to the atmosphere.…

A: At STP, 1 mole of a gas occupy 22.4 L of volume.

Q: 10. A 1.65-g sample of Al is reacted with excess HCl and the hydrogen produced is collected over…

A:

Q: The combustion of octane, C,H,8, proceeds according to the reaction shown. 2 C3H18(1) + 25 0,g) 16…

A: Number of moles of CO2 produced by combustion of 2 mol of octane = 16 mol Number of moles of CO2…

Q: A weather balloon filled with helium is launched in Alaska on a clear day when the temperature is…

A: We have initial temperature as -19°C , pressure as 758 torr, volume as 75 L, we have to calculate…

Q: estion 20 of 28 The combustion of octane, C, Hg, proceeds according to the reaction shown. 18 2C,H…

A: From the reaction it is clear that 2 mole octane combust to give 16 mole CO2  So, 538 mole octane…

Q: What mass of potassium nitrate is needed to generate 243.0 L of gas, composed of 97.00 L of N₂ and…

A: As per the guidelines, I am allowed to answer one question at a time. Please re upload the rest.…

Q: a sample of NH3 is added to an initially evacuated 2.00L flask at 125 degree celsius, until the…

A: The balanced reaction of ammonia and oxygen can be given as

Q: Oxygen gas can be prepared by heating potassium chlorate according to the following equation…

A: The number of moles of oxygen is calculated as,

Q: A weather balloon is filled with helium to a volume of 1000 L on the ground where the pressure is…

A: Given:       Initial condition Volume of balloon, V1=1000LPressure of ballon, P1=745…

Q: Is the relationship between pressure and temperature direct or inverse? Explain

A:

Q: A weather balloon containing 600. L of He is released nearthe equator at 1.01 atm and 305 K. It…

A: The ideal gas equation is given as- PV= nRT      (Equation-1) where, P is the pressure of the gas V…

Q: Oxygen gas reacts with powdered aluminum according to the reaction:4 Al(s) + 3 O2(g) ------->2…

A: Given: Pressure= 782 mmHg= 782760atm=1.0289 atm Temperature= 25°C=25+273.15 K=298.15 K Mass of Al=…

Q: estion 30 of 45 > The combustion of octane, C,H8, proceeds according to the reaction shown. 2…

A:

Q: In a system, you have 246mmHg of Oxygen (P1), 385mmHg of Hydrogen (P2). and 288mmHg of Carbon (P3).…

A: Given : pressure of Oxygen, hydrogen and carbon.  To find : total pressure of the system.  Solution…

Q: A rigid chamber contains three gases: H,O, O, and N2 - each has the same partial pressure of 0.934…

A: Acc To Dalton law of pressurePTotal  = PH2O  + PO2   + PN2PTotal  = (0.934 + 0.934 + 0.934 )…

Q: How many grams of oxygen are collected in a reaction where 240 mL of oxygen gas is collected over…

A:

Q: 5.48 Calculations show that a reaction should yield 5.67 g of carbon dioxide gas, CO2. What volume…

A: Given that Mass of CO2 produced = 5.67 g Temperature = 26 °C = 26 +273 = 299 K Pressure = 782 mm Hg…

Q: The decomposition of 30.354 g of potassium chlorate yields solid potassium chloride and oxygen gas…

A:

Q: Hydrogen gas is collected at 40oC during the following reaction:   Al          +            HCl…

A: From given datas Initially we are calculating number of moles from the balanced equation and then…

Q: What is the density of 1.00 mol of carbon monoxide gas at STP?

A: We have given that  1 mole of CO at STP  Molar mass CO = 28 g/mole

Q: 9. If 33.6 g of NO and 26.9 g of Oz react together, what is the mass in grams of NO2 that can be…

A:

Q: A large evacuated flask initially has a mass of 134,567 g. When the flask is filled with a gas of…

A: Mass of flask + water=1067.9 g mass of flask=134.567 g Mass of water filling the flask =…

Q: A 5.0-L sample of sulfur hexafluoride (SF6) is stored at a temperature of 250.0 K and a pressure of…

A:

Q: A 2.50 L volume of hydrogen measured at -196 is warmed to 100. Calculate the volume of the gas at…

A: Solution - According to the question - Given - Charles law - Charles's law is an experimental gas…

Q: The combustion of octane, C8H18 proceeds according to the reaction shown.…

A:

Q: The combustion of octane, C,H8, proceeds according to the reaction shown. 2C,H (1) + 250,(g) 16…

A: Given, Moles of octane = 595 moles Temperature of reaction, T = 32oC Pressure of reaction, P = 0.995…

Q: Given the following reaction: Mg(s) + 2 HCI(aq) MgCl2(aq) + H2(g) 9.49g of magnesium solid is placed…

A:

Q: A 144.6 mL sample of O2 gas at 509.6 torr is compressed at constant temperature to 87.5 mL. Predict…

A:

Q: be a significant source of air pollution. The Kilauea volcano in Hawaii em 200–300t (1t= 10°kg) of…

A:

Q: A weather balloon is inflated to a volume of 24.5 L at a pressure of 750 Torr and a temperature of…

A: The Charles’s law may be stated as the unique case of ideal gas in which the species volume is…

Q: collected in a reaction where 215mL of oxygen gas is collected over water at a temperature of 25 ∘C…

A: We will use ideal gas equation to get the answer.

Q: A sample of gas contains 0.1700 mol of NH,(g) and 0.2125 mol of O,(g) and occupies a volume of 21.8…

A: Given: The number of moles of NH3 (g) is 0.1700 mol The number of moles of O2 (g) is 0.2125 mol 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.