Alarge balloon is initially filled to a volume of 25.0 l at 353 k and a pressure of 2575 mm hg. what volume of gas will the balloon contain at 1.35 atm and 253 k? 6)
a.45.0 l
b.11.4 l
c.87.5 l
d.22.2 l
e.58.6 l

Frost wedging occurs when water seeps into a crack in a rock, freezes, and causes the crack in the rock to widen. t or f

In a series circuit the __ is the same at every point

Cyclotrons are widely used in nuclear medicine for producing short-lived radioactive isotopes. these cyclotrons typically accelerate h- (the hydride ion, which has one proton and two electrons) to an energy of 5 mev to 20 mev. this ion has a mass very close to that of a proton because the electron mass is negligible—about 1 2000 of the proton’s mass. a typical magnetic field in such cyclotrons is 1.9 t. (a) what is the speed of a 5.0-mev h-? (b) if the h- has energy 5.0 mev and b = 1.9 t, what is the radius of this ion’s circular orbit?