During the combination of copper sulfate solution and zinc metal, 5 atoms of sulfate and 1 atom of copper interact with 1 atom of zinc, resulting in new products after the reaction. How many atoms are there before and after the reaction? Choose the letter of the correct answer. A
before: 7 atoms; after: 5 atoms

B
before: 7 atoms; after: 6 atoms

C
before: 7 atoms; after: 0 atoms

D
before: 7 atoms; after: 7 atoms

Most energy in an ecosystem comes originally from_

What is the magnification of a real image if the image is 10.0 cm from a mirror and the object is 50.0 cm from the mirror ? use the equation m=-di/do. a. -5.0 b. 5.0 c. 0.20 d. -0.20

You are a sales representative for a company that makes a new alternate fuel for vehicles. you have prepared a presentation for the environmental engineers to sell your new product. what question do you expect the audience to ask regarding whether the new fuel will cause less damage to the environment? a. do we have to change any parts of the vehicle to use this alternate fuel? b. will the vehicles get better fuel mileage with the alternate fuel? c. how much greenhouse gas does your fuel produce compared with current fuel sources? d. is the alternate fuel more expensive than fossil fuel?