The compound ptcl2 (nh3)2 is effective as a treatment for some cancers. it is synthesized by the reaction shown in the following equation. k2 ptcl4(aq) + 2nh3 (aq) ⟶ 2kcl (aq) + ptcl2 (nh3)2(aq). how many moles of k2 ptcl4 must react in order to produce 30.0 g ptcl2 (nh3)2? a) 0.100 mol k2 ptcl4 b) 0.200 mol k2 ptcl4 c) 0.140 mol k2 ptcl4 d) 0.160 mol k2 ptcl4

Amachine that produces a special type of transistor (a component of computers) has a 2% defective rate. the production is considered a random process where each transistor is independent of the others. (a) what is the probability that the 10th transistor produced is the first with a defect? (b) what is the probability that the machine produces no defective transistors in a batch of 100? (c) on average, how many transistors would you expect to be produced before the first with a defect? what is the standard deviation? (d) another machine that also produces transistors has a 5% defective rate where each transistor is produced independent of the others. on average how many transistors would you expect to be produced with this machine before the first with a defect? what is the standard deviation? (e) based on your answers to parts (c) and (d), how does increasing the probability of an event a↵ect the mean and standard deviation of the wait time until success?