Stemplots. In Exercises 13 and 14, construct the stemplot. Car Braking Distances Refer to Data Set 14 in Appendix B and use the 21 brakingdistances (ft). Are there any outliers? Is there strong evidence suggesting that the data are notfrom a population having a normal distribution?
Chemistry Notes Week 13 NOTE: May 1st- Chemistry ﬁnal review session An oxidation-reduction (or redox) reaction is a chemical reaction in which electrons are transferred from one reactant to another A. Oxidation is the loss of electrons B. Reduction is the gain of electrons 2+ C. Reducing agents (Zn loses two electrons and is oxidized to Zn ) 2+ D. Oxidizing agent (Cu gains two electrons and is reduced to Cu) E. A redox reaction is the sum of an oxidation half-reaction and a reception half- reaction The oxidation number is the charge an atom if electron were transferred completely A. H2(g) + F2(g) —> 2HF(g) B. The oxidation number of H i2 0 C. The oxidation number of F i2 0 D. The oxidation number of HF (+1)(-1) Oxidation Numbers (Assign the numbers to the elements in the compound KMnO4-) A. Step 1: Start with the oxidation numbers you know 1. K is +1 2. O4 is -8 (-2x4) 3. So Mn has to be -7 B.