Calculate the work, w, gained or lost by the system (in kj) when a gas expands from 15 l to 35 l against a constant external pressure of 1. 5 atm. 101. 3 j = 1 l × atm.

The personal identification number that students need to apply for federal student aid

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

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.