Find the density of Freon-11 (CFCI) at 180.0 °C and 7.42 atm. Round your answer to 3 significant figures. Note: Reference the Fundamental constants table for additional information. Of × G 4
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- 109 An ore sample with a mass of 670 kg contains 27.7% magnesium carbonate, MgCO3. If all of the magnesium carbonate in this ore sample is decomposed to form carbon dioxide, describe how to determine what volume of CO2 is evolved during the process. What would have to be measured to predict the needed volume in advance?A micro-syringe has a maximum volume of 50 mL. A chemical reaction known to generate methane gas is sampled using the syringe twice. The first sample with a volume of 10.0 mL was determined to contain 5.98 x 10-7 moles of methane gas. If a second sample of 25.0 mL was taken, with the reaction at the same temperature and pressure, how many moles of gas are in the 25.0 mL sample?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 113. kPa. The piston is now pulled up, expanding the gas, until the gas has a final volume of 20.0 L. Calculate the final pressure of the gas. Be sure your answer haş the correct number of significant digits. piston cylinder gas olo Ar ||kPa x10
- Find the density of Freon-11 (CFC13) at 110.0 °C and 6.87 atm. Be sure your answer has the correct number of significant figures. Note: Reference the Fundamental constants table for additional information. g L 0x1.8 XA 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 x10For many purposes we can treat methane (CH) as an ideal gas at temperatures above its boiling point of -161. °C. Suppose the temperature of a sample of methane gas is raised from -21.0 °C to 23.0 °C, and at the same time the pressure is changed. If the initial pressure was 0.28 kPa and the volume decreased by 60.0%, what is the final pressure? Round your answer to 2 significant digits. kPa x10 X S
- 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 286. kPa. The piston is now pushed down, compressing the gas, until the gas has a final volume of 4.00 L. Calculate the final pressure of the gas. Round your answer to 3 significant digits. piston cylinder gas | kPa x10A 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 282. kPa. The piston is now pushed down, compressing the gas, until the gas has a final volume of 4.40 L. Calculate the final pressure of the gas. Be sure your answer has the correct number of significant digits. piston cylinder gas Ar |kPa x10 ?The average kinetic energy of the molecules in a gas sample depends only on the temperature, ?. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed rms speed=3??ℳ‾‾‾‾‾√ where ?=8.314 J/(mol⋅K) and ℳ is molar mass in kilograms per mole. Note that a joule is the same as a kilogram‑meter squared per second squared (kg·m2/s2). What is the rms speed of N2 molecules at 345 K? The average kinetic energy of the molecules in a gas sample depends only on the temperature, ?. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed rms speed=3??ℳ‾‾‾‾‾√ where ?=8.314 J/(mol⋅K) and ℳ is molar mass in kilograms per mole. Note that a joule is the same as a kilogram‑meter squared per second squared (kg·m2/s2). What is the rms speed of N2 molecules at 345 K?
- For many purposes we can treat methane (CH) as an ideal gas at temperatures above its boiling point of – 161. °C. Suppose the temperature of a sample of methane gas is lowered from 15.0 °C to – 16.0 °C, and at the same time the pressure is changed. If the initial pressure was 5.2 atm and the volume decreased by 30.0%, what is the final pressure? Round your answer to the correct number of significant digits. || atm x10For many purposes we can treat propane (C3H₂) as an ideal gas at temperatures above its boiling point of -42. °C. Suppose the temperature of a sample of propane gas is raised from 19.0 °C to 20.0 °C, and at the same time the pressure is changed. If the initial pressure was 1.9 atm and the volume increased by 40.0%, what is the final pressure? Round your answer to the correct number of significant digits. atm x10 × Ś ? 00. 18 ArThe average kinetic energy of the molecules in a gas sample depends only on the temperature, ?. However, given the same kinetic energies, a lighter molecule will move faster than a heavier molecule, as shown in the equation for rms speed rms speed=3??ℳ‾‾‾‾‾√ where ?=8.314 J/(mol⋅K) and ℳ is molar mass in kilograms per mole. Note that a joule is the same as a kilogram‑meter squared per second squared (kg·m2/s2). What is the rms speed of F2 molecules at 375 K? What is the rms speed? What is the rms speed of He atoms at 375 k?
