I’m not sure but I think it’s 2-7-4 because the numbers should still add up to 13.(hope it helped)
I’m really sorry I need points I hope you find an answer
Answer by YourHope:
Hi! :)
Answers:
A catalyst is a substance that changes the rate of the reaction, and is not consumed in the reaction!
A solution is a uniform mixture of molecules or ions of one substance in another!
A solute is the substance dissolved in a solution!
A solution is the substance that does the dissolving in a solution!
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Three mole ratios can be written for a chemical reaction involving three substances
1) is the answer because the only way to turn it from blue to yellow is to mix it with an acidic solution.