Answers: 1
Physics, 22.06.2019 23:00
Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.
Answers: 3
Physics, 22.06.2019 23:30
You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?
Answers: 3
Physics, 23.06.2019 16:00
Energy conservation is the process by which one kind of energy changes into a another and when energy is converted this way it's not lost or used up. true or false
Answers: 2
Physics, 23.06.2019 18:30
Earthquakes and volcanic eruptions are examples of rapid events that are caused by the movement of earth's mountain building is a much more slow process, which is caused by the movement of earth's a. ocean tides; crustal plates b. ocean tides; winds c. crustal plates; crustal plates d. crustal plates; ocean tides
Answers: 3
The element hydrogen is made up of which kind(s) of atoms? select one: a. only hydrogen atoms b. m...
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