The specific volume of 5 kg of water vapor (h2o) at 1.5 mpa, 440 °c is 0.2160 m/kg. (this could be the condition exiting a boiler in a steam power plant.) we'll learn how to use the "steam tables" to find this information in a couple of weeks.) determine (a) the volume in m, occupied by the water vapor, (b) the amount of water vapor present in gmol and (c) the number of molecules. recall that avagodro's number is na 6.024x1023 molecules/gmol (6.023x 1 026 molecules/kmol). also, the molecular weight of water is very closed to 18.0 g/gmol (kg/kmol). [ans: (a) v 1.08 m] repeat your calculations if the 5 kg of water (h2o) is cooled to a temperature of 40 °c, such that the specific volume is reduced to 0.001007 m/kg. the pressure is still .5 mpa. (this could be the condition entering a boiler in a steam power plant.)

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2

In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons