First, he should measure how long it takes for the liquid to become clear if X and Y are mixed together. Then, he should measure how long it takes if he also adds substance A to X and Y. He will find out if substance A is a catalyst.
Answer:
You're right its C. There will be no transfer of heat from the nickel to the water in the glass.
I hope this answers your question(s). Have a good weekend!
:)
Soccer players use special shoes called cleats which dig into the ground cleats use friction to make the soccer player go faster
hope this helps :):):):):):):):):):)
Answer:
i think it's
c) systems that are responsible for a specific function.
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