calculate the amount of work done against an atmospheric pressure of 1.00 atm when 500.0 g of zinc dissolves in excess acid at 30.0°c. zn(s) + 2h+(aq) → zn2+(aq) + h2(g)

Write a personal narrative essay that describes a significant experience that has shaped your identity. develop the narrative through pacing, dialogue, and details that engage the reader.

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

"what factors influence the absorption of sunlight at earth's surface? "