In a first-order reaction. let's suppose that a quantity, x, of
reactant is added at regular intervals of time, [delta t]. at first
the amount of reactant in the system builds up; eventually, however,
it levels off at a "saturation vlaue" given bythe expression:
saturation value = x/1-10(negative a) , where a = 0.30
deltat/half life.
this analysis applies to prescription drugs, where you take
acertain amount each day. suppose you take 0.100 g of a drugthree
times a day and that the half-life for elimination is 2.0days. (a)
using this equation, calculate the mass of the frugin the body at
saturation (the saturation value). (b) suppose further that side
effects show up when 0.500 g of the drugaccumulates in the body. as
a health-care professional, whatis the maximum dosage you could
assign to a patient for an 8-hourperiod without the
side-effects?

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

Nconcentration refers to the molar concentration of an ion in solution. it may be identical to, or greater or less than, the molar concentration of the compound containing the ion that was used to make the solution. for soluble salts, the molarity of a particular ion is equal to the molarity of that compound times the subscript for that ion. for example, 1 m of alcl3 is 1 m in al3+ and 3 m in cl−. 1 m of (nh4)2so4 is 2 m in nh4+ and 1 m in so42−. part a what is the concentration of k+ in 0.15 m of k2s? view available hint(s) nothing m m part b if cacl2 is dissolved in water, what can be said about the concentration of the ca2+ ion? view available hint(s) if is dissolved in water, what can be said about the concentration of the ion? it has the same concentration as the cl− ion. its concentration is half that of the cl− ion. its concentration is twice that of the cl− ion. its concentration is one-third that of the cl− ion. part c a scientist wants to make a solution of tribasic sodium phosphate, na3po4, for a laboratory experiment. how many grams of na3po4 will be needed to produce 550 ml of a solution that has a concentration of na+ ions of 0.700 m ? express your answer numerically in grams. view available hint(s) mass of na3po4 n a 3 p o 4 = nothing g provide feedback

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear