In the compound below, what do the subscripts indicate?

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c6h12o6

a. there are twice as many carbon atoms as hydrogen atoms

b. there are 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms in this compound

c. hydrogen atoms are twice as big in size as carbons and oxygens

d. there are two chloride ions for each magnesium ion

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?