At a given temperature the vapor pressures of benzene and toluene are 183 mm hg and 59. 2 mm hg, respectively. Calculate the total vapor pressure over a solution of benzene and toluene with xbenzene = 0. 580.

What must students do with the 10 gird-ins on the math section of the psat

Afarmer began a new method of reducing grain spills. this reduced the number of mice on the farm. the number of snakes in the surrounding area decreased at the same time. the snakes depended on the mice that lived in the field. what’s the likely reason the snake population decreased? a. the number of snake predators increased. b. the number of mice increased. c. the number of mice decreased. d. the pesticides affected the snakes. e. a new breed of mice moved into the field.

The graph shows the populations of two species over time. which type of symbiotic relationship does the graph represent? a. commensal b. mutualistic c. parasitic d. parent-offspring e. predator-prey