SC.7.L.17.2
1. Eagles are predators, meaning they hunt animals for food. Vultures are scavengers, meaning they eat they
remains of animals. Which of the following statements correctly describes how predators and scavengers affect
their environments?
a. Both scavengers and predators remove energy from the environment.
b. Both scavengers and predators transfer energy within the environment. *
C. Scavengers transfer energy, while predators remove energy from the environment.
d. Predators gain energy from their prey, and scavengers lose energy lose energy by feeding on remains.

Based on the equation and the information in the table, what is the enthalpy of the reaction?

One way in which the useful metal copper is produced is by dissolving the mineral azurite, which contains copper(ii) carbonate, in concentrated sulfuric acid. the sulfuric acid reacts with the copper(ii) carbonate to produce a blue solution of copper(ii) sulfate. scrap iron is then added to this solution, and pure copper metal precipitates out because of the following chemical reaction: (s) (aq) (s) (aq) suppose an industrial quality-control chemist analyzes a sample from a copper processing plant in the following way. he adds powdered iron to a copper(ii) sulfate sample from the plant until no more copper will precipitate. he then washes, dries, and weighs the precipitate, and finds that it has a mass of .

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.