Bobby and Jane dissolve 26.8 g of solid potassium iodide in water, then pour the solution into an excess of concentrated lead (ll) nitrate. Jane carefully filters the resulting yellow precipitate from the solution and dries the solid overnight. The following day, Bobby finds the mass of the precipitate (which he knows to be Pbl2) to be 34.8 g. What is the percent yield of Bobby and Jane's reaction?

Monkeys and bats have similar bone structure in their forelimbs. however, monkeys have longer forelimbs to use for climbing and swinging in trees. bats have shorter forelimbs to use for flight. which term best describes how monkey and bat forelimbs are related to each other? a. homologous b. embryonic c. analogous d. vestigial

When 13.3 g koh is dissolved in 102.7 g of water in a coffee-cup calorimeter, the temperature rises from 21.4 °c to 31.53 °c. what is the enthalpy change per gram of koh (j/g) dissolved in the water? * take the density of water as 1.00 g/ml. * assume that the solution has a specific heat capacity of 4.18 j/g*k. enter to 1 decimal place. do not forget the appropriate sign /(+). canvas may auto-delete the (+) sign

The arrangement of particles is most ordered in a sample of