Asolution possibly contains k+, pb2+, ag+, fe2+ and/or ni2+. which of the following statements is true about what could be concluded from the fact that the addition of hcl produces a precipitate? ag+ is the only species present. both ag+ and pb2+ are present and no other ions are present. either ag+, pb2+ or both are present. this does not give us any information about the other three ions. only k+, fe2+ or ni2+ could be present in solution.

idk what the question is about

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".

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