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Ainat [17]
4 years ago
11

Potassium has an atomic number of 19.

Chemistry
1 answer:
aleksandrvk [35]4 years ago
8 0
The correct response would be C. Those in the outermost shell, and of highest electron energy are the valence electrons for potassium.
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A) ambos pertencem ao 5o período da Tabela Periódica;
Reptile [31]

Answer:

A

Explanation:

8 0
3 years ago
1,5,25,125 what’s the pattern rule and extend by 3 more numbers
nika2105 [10]

For the first one the pattern is multiply the previous number by five as you see 1 x 5 = 5 and so on. To keep adding to it you would do

125 x 5 = 625     625 x 5 = 3125    3125 x 5 = 15625

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81 / 3 = 27       27 / 3 = 9        9 / 3 = 3

I hope this helps you and if you have anymore questions i'll be  glad to answer them.



4 0
3 years ago
When most fuels burn, water and carbon dioxide are the two main products. Why can´t you say that water and carbon dioxide are pr
STatiana [176]
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7 0
3 years ago
Read 2 more answers
What effect does removing predators have on prey?
Lana71 [14]
What effect does removing predators have on prey?

:It means that as they are removed the predators go hungry and they could become extinct.

Hope I helped!
3 0
3 years ago
Read 2 more answers
1. What is the potential energy of a 8 kg ball that is at a height of 20 m?
weqwewe [10]

Answer:

1. 1568 J

2. 0 J

3. 1176 J

Explanation:

PE = mgh

(PE = Potential Energy) = (m = mass)(g = gravitational force which is 9.8)(h = height)

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2. PE = (3)(9.8)(0) = 0 J

3. (5)(9.8)(24) =  1176 J

4 0
3 years ago
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