Chemistry, 19.11.2019 05:31 rakanmadi87
Adisposable tank of helium can be purchased to fill up balloons. such tanks hold about 422 liters of helium compressed to 17.7 atm at room temperature (or 393k), and cost about $50. use the ideal gas law (pv = nrt) to calculate the number of moles of helium gas in the tank. for these units of pressure and volume, r = 0.0821 atm l/mol k.
Answers: 2
Chemistry, 21.06.2019 15:00
If a planet rotates 360 degrees during a 24 hour time period, what does that tell us about the planet? a. the middle of the planet is in darkness b. the seasons on the planet vary every day. c. the planet runs on a 12-hour time clock. d. the temperature on the planet varies daily.
Answers: 1
Chemistry, 22.06.2019 03:30
At a temperature of 393 k, the temperature of a sample of nitrogen is 1.07 atm what will the pressure be at a temperature of 478 k
Answers: 1
Chemistry, 22.06.2019 10:00
3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?
Answers: 2
Chemistry, 22.06.2019 14:10
16. in a reaction that has reached equilibrium, a. the forward and reverse reactions are occurring at the same rate. b. the reactants and products are in equal concentrations. c. the forward reaction has gone further than the reverse reaction. d. there are equal numbers of atoms on both sides of the equation. e. a, b, and d are correct.
Answers: 2
Adisposable tank of helium can be purchased to fill up balloons. such tanks hold about 422 liters of...
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