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Arisa [49]
3 years ago
15

Which groups on the periodic table contain metalloids? Groups 1–2 Groups 3–12 Groups 13–16 Groups 17–18

Chemistry
2 answers:
musickatia [10]3 years ago
7 0

Answer:

13-16

Explanation:

agasfer [191]3 years ago
6 0
The correct answer is groups 13-16
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The sum of gravitational potential energy and kinetic
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Answer:

Explanation:

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0                                    4                                                0                        4

2                                     2                                               2                        4

4                                     0                                               4                        4

6                                     2                                               2                        4

8                                     4                                               0                        4

and so on  .....

We see that total mechanical energy is always 4 which is constant .

So gravitational and kinetic energy changes cyclically but total mechanical energy is constant .

         

7 0
3 years ago
In the reaction n2 + 3h2 ---> 2nh3, how many grams of nh3 are produced if 25.0 g n2 reacts with excess h2? question 10 option
Lisa [10]
Molar mass of N2 = 28

Moles of N2 = 25 / 28 = 0.89

So, moles of NH3 produce = 2 x 0.89 = 1.78 

Note: H2 is in excess. so no need to care about it. 
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Explanation:

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gizmo_the_mogwai [7]

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