L Sketch of a gas-collection apparatus Calculate the mass of CO that is in the collection tube. Round your answer to 2 significant digits. You can make any normal and reasonable assumption about the reaction conditions and the nature of the gases. Sometimes in lab we collect the gas formed by a chemical reaction over water (see sketch at right). This makes it easy to isolate and measure the amount of gas produced. Suppose the CO gas evolved by a certain chemical reaction taking place at 55.0 °C is collected over water, using an apparatus something like that in the sketch, and the final volume of gas in the collection tube is measured to be 112. mL. g x10 collected gas water chemical reaction

A sample of of krypton gas at a pressure of 1.18 atm and a temperature of 21.5 degrees Celsius, occupies a volume of 670 mL. If the gas is compressed at constant temperature until its pressure is 1.50 atm, the volume of the gas sample will be ---- mL.

[Review Topics] [References] Use the References to access important values if needed for this question. A sample of hydrogen gas occupies a volume of 8.88 L at 48.0°C and 0.550 atm. If it is desired to increase the volume of the gas sample to 11.7 L, while decreasing its pressure to 0.399 atm, the temperature of the gas sample at the new volume and pressure must be Submit Answer Retry Entire Group 9 more group attempts remaining Prus Email instructior Save and Exit

Classify each situation by the equation that would quantify it. a. A container of ammonia cleaner is stored in the janitor's closet off a lecture hall after being used at night for cleaning. The container has a very small hole in the lid. The next morning the entire lecture hall smells of ammonia. How would you calculate the speed of the ammonia molecules as they move out into the lecture hall? b. The pressure on a tire pump is read. The handle of the pump is pushed down as far as possible. The reading of the pressure on the gauge is taken again. How would you calculate the final pressure? c. The burner under a hot air balloon is ignited and the balloon expands. How would you calculate the expanded volume of the balloon? d. A front-end collision causes the air bag in an automobile to deploy by the reaction of sodium azide to produce nitrogen gas. How would you calculate how much sodium azide is needed to fill a standard size bag with nitrogen under STP conditions? e. Aerosol cans have…