QUESTION 2 What amount (in moles) of a gas is contained in 40.4 L at-82.4 °C...
Please help with these two 1. A flask is filled with 1.08 moles of a gas at 20.7 K and 646.8 mm Hg. The flask is then opened and an additional 1.33 moles are added. The temperature of the flask is then changed to 272.4 K. What is the pressure (in atm) of the flask under these final conditions? 2. The density of a gas is 4.22 g/L at a pressure of 1.77 atm and a temperature of 14.66 °C. What...
QUESTION 3 0.5 points Save Answer A flask is filled with 1.56 moles of a gas at 14.2 K and 636.7 mm Hg. The flask is then opened and an additional 1.56 moles are added. The temperature of the flask is then changed to 136.3 K. What is the pressure (in atm) of the flask under these final conditions? QUESTION 4 0.5 points Save Answer What is the density in g/L) of a gas with a molar mass of 177.9...
1- A mixture of hydrogen and argon gases, in a 8.69 L flask at 77 °C, contains 0.477 grams of hydrogen and 7.10 grams of argon. The partial pressure of argon in the flask is ____ atm and the total pressure in the flask is ____ atm. 2- A mixture of methane and carbon dioxide gases is maintained in a 7.86 L flask at a pressure of 1.93 atm and a temperature of 39 °C. If the gas mixture contains...
Question 46 1 pts How many moles of gas are contained in 890.0 mL at 21.0°C and 750.0 mm Hg pressure? O 0.120 g 0.0364 g 22.4g © 27.5 g
QUESTION 1 0.5 points Save Answer An energy diagram for the formation of crystalline potassium fluoride is shown below: A kig) +E+F(g) Kig)+F) Kig)+F) K(g) +1/25212 K()+1/2FTI KF) and the electron affinity of fluorine is labeled by the number In this diagram, the sublimation energy of potassium is labeled by the number {Enter as a whole number.) QUESTION 2 0.5 points Save Answer What volume (in Llis accupied by 2.39 moles of gas at -22.4 °C with a pressure of...
Animation P-V Relationships 〈 13 of 14 Part C A certain gas is present in a 14.0 L cylinder at 1.0 atm pressure. If the pressure is increased to 2.0 atm the volume of the gas decreases to 7.0L. Find the two constants ki, the initial value of k, and kr, the final value of k, to verify whether the gas obeys Boyle's law by entering the numerical values for ki and k in the space provided. Express your answers...
A 25.0 L cylinder is filled with 9.26 moles of a gas at a pressure of 1.21 atm. What is the temperature (in K) of the gas? Answer:
A sample of gas is contained in a 245 mL flask at a temperature of 23.5°C. The gas pressure is 37.4 mm Hg. The gas is moved to a new flask, which is then immersed in ice water, and which has a volume of 60 mL. What is the pressure of the gas in the smaller flask at the new temperature? _______ mmHg
1.21 mol sample of helium gas at a temperature of 26.0 °C is found to occupy a volume of 21.2 liters. The pressure of this gas sample is mm Hg. A sample of methane gas collected at a pressure of 227 mm Hg and a temperature of 296 K has a mass of 16.4 grams. The volume of the sample is L. A 6.62 gram sample of methane gas has a volume of 999 milliliters at a pressure of 2.67 atm. The...
10. Gas is contained in an 8.00 L vessel at a temperature of 20.0°C and a pressure of 9.00 atm. Determine the number of moles of gas in the vessel.