4.42 grams of sulfur dioxide are mixed with excess water. The reaction yields 3.73 grams of sulfurous acid (H2SO3). SO2 (g) + H2O (l) H2SO3 (g)

(1) What is the theoretical yield of sulfurous acid (H2SO3)?
grams
(2) What is the percent yield for this reaction?

When the following equation is balanced using the smallest possible integers, what is the coefficent of oxygen gas? c7h16o(g) + o2(g) → co2(g) + h2o(g) -1 -5 -8 -16 -21

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change