Answer:
its the 3rd option.
the molecules move from region of higher concentration to a region of lower concentration.
Explanation:
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What are you asking? you put the answer in your question. consumer
If mirrors did not reflect light, then we would be able to see through it.
I'm not 100% sure but I think it's false
Ok so 40 percent of 3000 grams which is 3 kg is 1200 grams
So you would need 1.2kg or 1200 grams to make a 40% solution