Answer:
2Cu + S ~~~> Cu2S Copper (C) reacts with sulfur (S) to form copper sulfide as shown in the equation. A scientist adds 12.7 grams of Cu to 3.2 grams of S to start the reaction.
Explanation:
B) 1 Zn+ 2HCl--> 1 ZnCl2+1H2
This is balanced
Answer:
D. the organism is able to survive and reproduce more than others in it's environment
Explanation:
It will only go extinct if it can't survive or reproduce.