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Leya [2.2K]
3 years ago
11

What types of elements are responsible for the colors of fireworks?

Chemistry
1 answer:
AfilCa [17]3 years ago
3 0
Transition metals usually 
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How many neutrons are in the nucleus of an atom that has an atomic mass of 36 and an atomic number of 25?
elixir [45]

Answer:

Neutrons = 11

Explanation:

To get the number of neurons an element has you have to subtract the number of protons from the atomic mass of that element.

The number of protons is equal to the atomic number of that element.

Atomic number = Number of Protons

So the number of protons is 25

Neutrons = Atomic mass - Number of Protons

Neutrons = 36 - 25

Neutrons = 11

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3 years ago
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What element has the electron configuration below? *<br><br> please help me
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Answer:

Symbol Ar

Group 18

Electron configuration- 1s² 2s² 3p6 3s² 3p6

Explanation:

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It is the boilimg point now aa
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Which of these is a characteristic of science?
Ivahew [28]

D. It gives the same results when experiments are repeated

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In a laboratory investigation, an HCl(aq) solution with a pH value of 2 is used to determine the molarity of a KOH(aq) solution.
guapka [62]

Answer:

blue

Explanation:

KOH is a base therefore it's pH will be above seven. According to table M when tested with the indicator bromcreeol green The solution will turn blue

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