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A sample gas mixture contains the following quantities of 3 gases
1) 3.13 grams of CO
2) 1.81 grams of CO2
3) 3.73 grams of SF6
The sample gas a volume of 2.50 L and temperature of 16.6 C
what is the partial pressure for each gas in mmHg?
what is the total pressure in the flask
Write balanced net ionic equations (using half-reaction method) for each off the following chemical reactions. Show Work. 1) Solid sodium metal is added to a solution of solfuric acid.
A concentration of the pollutant NO2 in air of 3.00 ppm (m/v) may be lethal to humans. Will air that contains 1.9 x 10^-3g at NO2 per liter be lethal to humans?
1. why should activated carbon be used during a recrystallization. 2. if a little activated charcoal does a good job removing impurities in a recrystallization, why not use a large quantity
Why did the dialysis bag in the osmosis and dialysis experiment change
An excited hydrogen atom with an electron in the n=5 state emits light having frequency of (6.9 x 10^14)(s^-1). what is the principle quantum level for the final state in this electronic transition
The resulting mixture exerts a pressure of 731 mmHg at 83°C. (a) What is the partial pressure of each gas in the container (in mmHg). (b) What is the mass of the original sample (in g)
A patient needs to take 375 mg of ibuprofen twice daily. The pills in the bottle are each 250. rm mg. How many pills does the patient need to take each time she wants the 375 mg dosage? Assume that these pills are scored and can be cut in half if ..
Small helium-neon lasers emit 2.94 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
A weather balloon at Earth's surface has a volume of 4 L at 285 K and 791 mmHg. If the balloon is released and the volume reaches 4.19 L at 711 mmHg.
What is the FORMULA for the limiting reagent. What amount of the excess reagent remains after the reaction is complete. grams
Show all long pair electionrs (this means even those unreactive lone pairs), proper mechanistic arrows, all intermediate steps, and all side reactions if any. If you write them by hand please write clearly so I can understand everything.
The amount of boiling water required to raise the temperature of 25 kg of water in the bath to body temperature is 4.8 kg. In this process, the heat lost by the boiling water is equal to the heat gained by the room-temperature water.
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