Let A = {a, b, c, d, e} and B = {a, b, c, d, e, f, g, h}

Principles of General Chemistry 2
Chromium(III) oxide reacts with hydrogen sulfide (\(\mathrm{H}_{2} \mathrm{~S}\)) gas to form chromium(III) sulfide and water: \(\mathrm{Cr}_{2} \mathrm{O}_{3}(\mathrm{~s})+3 \mathrm{H}_{2} \mathrm{~S}(\mathrm{~g}) \rightarrow \mathrm{Cr}_{2} \mathrm{~S}_{3}(\mathrm{~s})+3 \mathrm{H}_{2} \mathrm{O}

Elementary Statistics: A Step By Step Approach 9
Computers in Elementary Schools Elementary and secondary schools were classified by the number of computers they had. Choose one school at random. Find the probability that it has a. 50 or fewer computers b. More than 100 computers c. No more than 20 computers

Elementary Statistics: A Step by Step Approach 7
What is the number of permutations of 6 different objects taken all together? a. 0 c. 36 b. 1 d. 720

Anatomy & Physiology 1
A substance dissociates into K+ and Cl in solution. The substance is a(n) ________. a. acid b. base c. salt d. buffer

Fundamentals of Physics, Volume 2 (Chapters 21 - 44) 10
If a Saturn V rocket with an Apollo spacecraft attached had a combined mass of 2.9  105 kg and reached a speed of 11.2 km/s, how much kinetic energy would it then have?

Urban Economics 8
Distance between Bus Stops Consider a city that decreases the distances between bus stops, which decreases the walking time of bus riders by 20 percent, increases the in-vehicle (line-haul) time by 10 percent, and increases operating cost by 10 percent. On the typical bus line, the initial ridership

Plant Systematics 3
What is the difference between alternate and distichous? Between opposite and decussate?

Plant Systematics 3
What are bootstrap, jackknife, decay index, and posterior probability? What do these assess?