A sample of helium gas occupies a volume of 9.12 L at 54.0°C and 0.640 atm. If it is desired to decrease the volume of the gas sample to 6.16 L, while increasing its pressure to 0.852 atm, the temperature of the gas sample at the new volume and pressure must be | °C.

A gas sample containing 0.6838 moles is trapped in a chamber with a volume of 7.557 liters.  If the temperature of the chamber is 25.02 oC, what is the pressure of the gas in atm? (assuming ideal behavior)

1. A sample of neon gas occupies a volume of 9.60 L at 49.0°C and 0.620 atm. If it is desired to increase the volume of the gas sample to 11.9 L, while increasing its pressure to 0.805 atm, the temperature of the gas sample at the new volume and pressure must be ____ °C. 2. A sample of xenon gas occupies a volume of 8.07 L at 66.0°C and 381 torr. If the volume of the gas sample is decreased to 6.86 L, while its temperature is decreased to –1.0°C, the resulting gas pressure will be ___ torr. 3. A helium-filled weather balloon has a volume of 681 L at 23.9°C and 754 mmHg. It is released and rises to an altitude of 6.81 km, where the pressure is 384 mmHg and the temperature is –22.1°C. The volume of the balloon at this altitude is  ___ L. 4. An iron nail rusts when exposed to oxygen.  According to the following reaction, how many grams of iron(III) oxide will be formed upon the complete reaction of 30.2 grams of oxygen gas with excess iron?iron (s) + oxygen (g) iron(III) oxide (s)  ____…

A mixture of CH4 (g) and C₂H6 (g) has a total pressure of 0.54 atm. Just enough O2 (g) is added to the mixture to bring about its complete combustion to CO2(g) and H₂O(g). The total pressure of the two product gases is 2.1 atm. Assuming constant volume and temperature, find the mole fraction of CH4 in the mixture. Express your answer using two significant figures.

References Use the References to access important values if needed for this question. The stopcock connecting a 1.00 L bulb containing xenon gas at a pressure of 454 mm Hg, and a 1.00 L bulb containing nitrogen gas at a pressure of 526 mm Hg, is opened and the gases are allowed to mix. Assuming that the temperature remains constant, what is the final pressure in the system? mm Hg

A cylinder is filled with 10.0 L of gas and a piston is put into it. The initial pressure of the gas is measured to be 175. kPa. The piston is now pulled up, expanding the gas, until the gas has a final volume of 64.0 L. Calculate the final pressure of the gas. Be sure your answer has the correct number of significant digits. piston olo cylinder gas Ar ||kPa x10

For many purposes we can treat nitrogen (N₂) as an ideal gas at temperatures above its boiling point of -196. °C. Suppose the temperature of a sample nitrogen gas is lowered from 20.0 °C to -17.0 °C, and at the same time the pressure is changed. If the initial pressure was 3.0 atm and the volume increased by 30.0%, what is the final pressure? Round your answer to 2 significant digits. atm 0 X S

Please write to their unit.

A sample of argon gas occupies a volume of 6.35 L at 45.0°C and 1.20 atm. If it is desired to decrease the volume of the gas sample to 3.81 L, while increasing its pressure to 1.53 atm, the temperature of the gas sample at the new volume and pressure must be °C.

For many purposes we can treat nitrogen (N₂) as an ideal gas at temperatures above its boiling point of -196. °℃. Suppose the temperature of a sample of nitrogen gas is raised from 27.0 °C to 57.0 °C, and at the same time the pressure is increased by 5.0%. Does the volume of the sample increase, decrease, or stay the same? increase decrease stays the same If you said the volume increases or decreases, calculate the percentage change in % the volume. Round your answer to the nearest percent. x10 X Ś