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fredd [130]
2 years ago
9

Please help with the question attachedI need it in an hour​

Chemistry
1 answer:
lawyer [7]2 years ago
4 0

Answer:

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Energy Changes in Reactions
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True or False: Increasing the amplitude<br> changes the wavelength.
dem82 [27]

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False

Explanation:

Amplitude does not affect wavelength

5 0
2 years ago
If a lab requires each lab group to have 25ml of a solution and it takes 15 grams of CuNO3 to make 1 liter of solution how many
tino4ka555 [31]

We need to do some general algebra here.

We will find that you need 8.25 grams of CuNO₃ to make enough solution for the 22 labs.

<em>We know that:</em>

  • Each lab group needs 25 ml of solution.
  • it takes 15 g of CuNO₃ to make one L of that solution.
  • There are 22 labs.

Because each lab needs 25 ml of solution, 22 labs will need that amount 22 times, so the <u>total amount of solution needed</u> is:

22*25ml = 550 ml

Now we know that we need 15 grams to make one liter of solution, and:

1 L = 1000ml

Then you need 15g to make 1000ml

and x (we want to find this amount) to make 550ml

Then we can write two equations (not actual equations, as these are different units) like:

x = 550ml

15g = 1000ml

Now we can take the quotient between these two equations:

x/15 g = (550ml/1000ml)

And now we can solve this for x:

x = (550ml/1000ml)*15g = 8.25g

So you need 8.25 grams of CuNO₃ to make enough solution for the 22 labs.

If you want to learn more, you can read:

brainly.com/question/8743486

5 0
3 years ago
Mass and energy are conserved Question 13 options: A) only in chemical changes. B) always in physical changes and sometimes in c
Roman55 [17]

Answer:

B

Explanation:

sometimes it can change chemically but not all the time.

3 0
3 years ago
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