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MaRussiya [10]
2 years ago
5

Which of the following are indicators of a chemical change? Select all that apply.

Chemistry
2 answers:
Arturiano [62]2 years ago
4 0
<span>Which of the following are indicators of a chemical change? Select all that apply.
</span>
These are the answers:

<span>color change
temperature change
precipitate formation
gas formation

Hope this helps.
</span>
Lorico [155]2 years ago
4 0
The awnser is A and B beacause chemical changes are what is on a molecular level while the other choices are physical changes.
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You are given a solution that is 518 mM lactose. You need to make up 4.5 L of 16.7 mM solution. What volume do you need to trans
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Answer:

The volume you need to transfer from the stock solution is 0.145 l

Explanation:

Since the number of moles of lactose in the volume of stock solution that you transfer will be the same as the number of moles of lactose in the final solution, you can use this expression:

number of moles in volume to transfer = number of moles in the final solution

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