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NemiM [27]
3 years ago
8

When looking across the periodic table from left to right, which is the first group that contains nonmetals?

Chemistry
2 answers:
Westkost [7]3 years ago
7 0

It would be group 1 because of hydrogen but since it's not there the other group is group 14.

ehidna [41]3 years ago
5 0

Answer:

When looking through the periodic table from left to right, the first group containing nonmetals is 14.

Explanation:

When looking through the periodic table from left to right, the first group containing nonmetals is 14.

The groups are classified as follows:

I: alkaline (<em>hydrogen does not enter in this classification</em>)

II: alkaline earth

III to XII: transition metals

XIII: Boron Series (Halogen)

XIV: Carbon Series

XV: nitrogen series

XVI: oxygen series

XVII: fluorine series

XVIII: noble gases

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According to the hypothesis provided for this investigation, the scientist wants to determine if the amount of fertilizer plants of the same species receive will affect their growth rate when planted in the same condition. This shows that the independent variable is the amount of fertilizer to be used while the RESPONDING VARIABLE OR DEPENDENT VARIABLE is the GROWTH RATE OF THE PLANTS because it responds to the amount of fertilizer.

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3 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:

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

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Then you need 15g to make 1000ml

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

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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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2 years ago
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