0.700 moles of an unknown solid is placed into water to make 150.0 ml of solution. the solution's temperature decreases by 8.41°c. calculate ∆h for the dissolution of the unknown solid. (the specific heat of the solution is 4.18 j/g･°c and the density of the solution is 1.02 g/ml).

Astudy group should stay around 3-6 people. true or false

Heights of men on a baseball team have a bell-shaped distribution with a mean of 177 cm and a standard deviation of 6 cm. using the empirical rule, what is the approximate percentage of the men between the following values? a. 159 cm and 195 cm b. 165 cm and 189 cm a. 89% of the men are between 159 cm and 195 cm. (round to one decimal place as needed.) b. 89% of the men are between 165 cm and 189 cm. (round to one decimal place as needed.)

In this food web, which group would increase in number if snakes were eliminated? a. producers b. decomposers c. primary consumers d. secondary consumers e. tertiary consumers