Not 100% sure but I believe it is C.
Answer:
When zinc is added to copper sulphate (CUSO4) solution due to more reactivity of zinc, cooper is replaced by the zinc and forms zinc sulphate. During the process, the colour of the solution changes from blue to colourless.
Answer:
2. quickest
Explanation:
because they have lower activation energy.
Answer:
i think its the first one not 100% on it tho but i know for a fact its NOT c
Explanation:
I believe your answer should be C because the heat would move from the soup to the spoon.
