During the analysis, 0. 163 g h2o and 0. 600 g co2 are produced. Calcuate the amount (mol) c in the sample, considering the mass of co2 gas formed by combustion. 0. 00905 mol h2o formed 0. 0181 mol h in sample.

Which two statements are true about a system? 1. a system is a group of objects analyzed as one unit. 2. energy that moves across system boundaries is conserved. 3. there’s only one way to define the boundaries of a system. 4. all systems are made by humans.

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

A24-n net force acts on a 8-kg rock.what is the acceleration of the rock?