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steposvetlana [31]
2 years ago
14

Can someone please try to help me? I’ll give you brainiest

Chemistry
1 answer:
nasty-shy [4]2 years ago
8 0

1.earth 24,900mi =40,072.666 km

2. 12,756km = 7,926.211 mi = 41,850,394.08 ft

3.36,198ft = 11,033.15m

4. 8847m= 29,025.59 ft

5. 2500mi2= 4,023.36km2

6. 10L= 2.19969 Gal

7 60 lbs= 27.2155kg= 27215.5g

hope that helps

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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

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