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Alex777 [14]
3 years ago
6

How are elements arranged on the periodic table?

Chemistry
1 answer:
Vladimir79 [104]3 years ago
4 0

Answer: In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. ... In a periodic table arranged in order of increasing atomic number, elements having similar chemical properties naturally line up in the same column (group).

Explanation: So it would be  [C] OR [A]

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Phenol red is an indicator that changes color over a range from ph=6.4 to ph=8.0. what is ka of phenol red?
patriot [66]
First, we will get the average pH of the two given values:
average pH = (6.4+8) / (2) = 7.2
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HA <.......> H+ + A- 
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<span>Ka = [H+][A-]/ [HA]
</span>Ka = [H+] = <span>6.3 x 10^-8</span>

7 0
4 years ago
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blagie [28]

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D. fusing 5 kg of hydrogen.

Explanation:

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