what would be the density of air under 20 C and 720 mmhg? (Hint: has density is proportional to T)

Q: Calculate the density of He(g) (in g/L) at 27°C and 760mmHg .Density of air under these condition is…

A: We can calculate with the help of some farmula

Q: A weather balloon calibrated at 0.00 °C to have a volume of 20.0 L has what volume at -30.4 °C…

A:

Q: At 655mmHg and 250°C, a sample of Chlorine gas has volume of 750mmL. How many moles of Chlorine gas…

A: In order to solve this question we will use ideal gas equation. Ideal gas equation:…

Q: A very flexible helium-filled balloon is released from the ground into the air at 20. °C. The…

A:

Q: 5. The volume for one mole of ideal gas at 47 ° C and one pressure:

A: Given :-  Number of moles of ideal gas = 1 mol  Pressure of gas = 1 atm  Temperature = 47°C  To…

Q: Calculate the density (in g/L) of nitrogen at 798.0 mmHg and 14.741°C.

A: Given data, Pressure = 798.0 mm Hg Temperature = 14.741 degree C. = 287.891K R = 62.363 mm…

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: Oxygen and hydrogen react when ignited to form water vapor.  Provide a balanced chemical equation.…

A:

Q: A volume of 0.50 L of air at 37 °C is expelled from the lungs into cold surroundings at 0.0 °C. What…

A: Given data, V1 = 0.50 LT1 = 37°C = (37 + 273) = 310KT2 = 0.0°C = 273K To calculate the volume.

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: What is the density of nitrogen gas (N2) at 25.0C and 780 mmHg? Please show work.

A: Conversion of mm Hg into atm: 760 mm Hg=1 atm780 mm Hg=1 atm760 mm Hg×780 mm Hg=780 atm 760

Q: A sample of oxygen was collected over water at 25.00°C and 0.884  atm. If the total sample volume…

A: According to the ideal gas equation, we can write: PV = nRT Where P, V, n, R, and T represent…

Q: A 0.432 liter sample of oxygen gas is collected at 745 mmHg and 24°C. What volume (in L) will the…

A: Charles's law :-  According to this , at constant pressure the volume of certain mass of a gas is…

Q: If a sample of helium gas has a volume of 120 mL and a pressure of 850 mmHg, what is the new volume…

A:

Q: You have 3.50L of NO at a temperature of 120.°C. What volume would the NO occupy at 37°C? (Assume…

A: I am answering second question only. Because you mention to answered that question only.

Q: 9. a. A bicycle tire holds 1.50 L of air at 506.6 kPa and 20.0 °C. How many moles of air is this?

A:

Q: What is the temperature of a balloon, initially at 20.0C and 2.00 L, if its final volume is 4.00 L?

A: Given balloon initially at 20.0C and 2.00 L,  final volume is 4.00 L

Q: A weather balloon calibrated at 0 C to have a volume of 20 L has what volume at -41.9 C assuming…

A: This question is related to the ideal gas equation. In mathematically, the expression for the ideal…

Q: A weather balloon is released into the atmosphere. You know theinitial volume, temperature, and air…

A: As per the ideal gas law,                                PV=nRT  Here, the pressure P, volume V and…

Q: A sample of a breathing mixture for divers contained 34.3% helium, He; 51.7% nitrogen, N2; and 14.0%…

A: We have to calculate the density of the mixture.

Q: 7. A sample of argon gas occupies 105 ml at 0.871 atm. If the temperature remains constant, what is…

A: 7) Given that: Initial volume (V1) = 105 mL = 0.105 L Initial pressure (P1) = 0.871 atm Final…

Q: A sample of helium has a volume of 325 mL and a pressure of 655 mmHg. What will be the pressure, in…

A: Use ideal gas equation to solve this problem. PV = nRT  Since the number of moles(n) of the gas and…

Q: part a. The balloon that Charles used for his initial flight in 1783 was destroyed, but we can…

A: According to ideal gas equation; PV = nRT where, P=pressure of the ideal gas = 745 mmHg =…

Q: 5.86 For a spacecraft or a molecule to leave the moon, it must reach the escape velocity (speed) of…

A:

Q: When calcium carbonate is decomposed by strongly heating, carbon dioxide gas is evolved.  Provide…

A: GIven, 4.75 g of calcium carbonate

Q: What volume will a 0.36litres of a gas at a pressure of 625mmHg occupy when the pressure changes to…

A: Volume of gas initially V1 = 0.36 liters Pressure of gas initially P1 = 625 mmHg Final pressure of…

Q: Exactly 2.50 L of air in a balloon at -38.0°C is warmed and allowed to expand to 6.00L. What is the…

A:

Q: At STP, calculate the density of nitrogen gas.

A: The volume occupied by 1 mole of a substance at a given temperature and pressure is called its molar…

Q: 2. What would be the density of air under 20°C and 720 mmHg? proportional to P and inversely…

A: The density of air under 20° C and 720 mmHg is to be calculated.

Q: Calcium reacts with water to produce gas and aqueous calcium hydroxide. Write the balanced equation.…

A: As per the information the balanced chemical equation for the reaction is as follows:

Q: Calculate the density (in g/L) of nitrogen at 729.0 mmHg and 45.187°C.

A: Given: The pressure is 729.0 mmHg. The temperature is 45.187 °C. Introduction: Write the ideal gas…

Q: If 0.500 mol of gas occupies 0.050 L at 25 °C, what is the pressure exerted by the gas (in atm.)?…

A: Given, Number of moles, n = 0.500 moles Volume of gas = 0.050 L Temperature = 25°C K = 273 + °C…

Q: what is the density of He at STP? why do helium-filled balloons rise in air?

A: At STP : Pressure, P = 1 atm Temperature, T = 273.15 K Molar mass of He, M = 4 g/mol   The density…

Q: References Use the References to access important values if n At constant temperature, 34.4 L of N,…

A: Since we know that for ideal gas PV  = nRT  where P = pressure  V = volume  n = moles  R = 0.0821 T…

Q: The volume of a person's lungs is 600.0 mL at a pressure of 760mmHg. When the lungs expanded to 610…

A: Boyles's law states that the pressure of the gas is inversely proportional to the volume, provided…

Q: How much a spherical helium balloon of 10 diameter contains when the temperature is at 15°C and…

A:

Q: if 751.3 g of oxygen gas reacts completly with hydrogen gas what volume of water vapor will be…

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

A:

Q: If a balloon is initially at 25.0 °C with a volume of 2.80 L, what would the volume of the balloon…

A: Here, the volume of a gas changes with the change in temperature at constant pressure. Thus, we need…

Q: The density of dry air at 22 C and 104 kPa is 1.228 g/L. Obtain the average molar mass of dry air…

A: The density of dry air at 22 °C and 104 kPa is 1.228 g/L. The average molar mass of dry air from…

Q: What is the density of ammonia gas, , at 35°C and 757 mmHg? Obtain the density in grams per liter.

A: Given: Temperature = 35.0 oC = 308 K Pressure = 757 mmHg = 0.9960 atm Molar mass of ammonia gas…

Q: Olympic cyclists fill their tires with helium to make them lighter. Calculate the mass of air in an…

A: The mass of air (mair), having molar mass = 28.8 g/mol, in an air-filled tire is; 125 psi=8.51…

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: A 100.0 mL sample of air is collected at 21 °C and 772 mmHg. What will the volume be if the…

A:

Q: 4. Exactly 4.00L of air at 223K is warmed and expands to 6.0OL of volume. What is the new…

A: Ideal gas follows the kinetic gas theory assumptions and laws that explain the nature of an ideal…

Q: A balloon contains 230 g He at a pressure of 1 atm.the initial volume of the balloon is 1300 L.Rhe…

A: Given: ∆E = 60.5 kJ mass of He = 230 g Pressure = 1 atm Initial volume = 1300 L Change in…

Q: Whats the Calculation the volume of oxygen collected if 2.36 g KClO3 is decomposed according to the…

A: Decomposition of Kcl O3 :-2 Kcl O3 →2kcl + 3O2

Q: A student reacts 0.0905 g of magnesium with 5.15 mL of 3.00 M hydrochloric acid in a eudiometer (gas…

A: Given data: mass of Mg = 0.0905 g volume of HCl used = 5.15 ml concentration of HCl = 3 M…

Q: Exactly 4.00L of air at 223K is warmed and expands to 6.00L of volume. What is the new temperature…

A: Here the pressure is kept constant and the volume and temperature is varying. As per the gas law…

Q: As per KMT, which one will have a higher volume at the same temperature and pressure – one mole of…

A: The ideal gas equation is as follows, PV = nRT

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.