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Serjik [45]
3 years ago
8

What is the purpose of attaching the clip/ clamp with graphite of the the pencil to the battery?

Chemistry
1 answer:
Sonja [21]3 years ago
4 0
The pencil attached to the negative terminal of the battery collects hydrogen gas while the one connected to the positive terminal collects oxygen.
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Identify whether each element is a halogen, a noble gas, or nonmetal only. Astatine (At): Nitrogen (N): Krypton (Kr): Chlorine (
sasho [114]

<u><em>Answer:</em></u>

  • Astatine and chlorine are halogens only
  • Nitrogen and sulphur are non metals only
  • Krypton (Kr) is noble gas only

Explanation


  • Krypton (Kr) is noble gas only because it present in group 8 A that is known as noble gases.
  • Nitrogen is present in group 5A which act as non metal
  • Sulphur is present in group  6 A which act as non metal
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3 0
4 years ago
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If a molecule with an empirical formula CHO has a molar mass of 88.12 g/mol, what is its molecular formula?
Karolina [17]

Answer:

C3H3O3

Explanation:

To find its molecular formula, we simply use the empirical formula together with the molar mass. Firstly, we obtain the molar mass of the empirical formula CHO. His can be obtained by using the masses of the individual atoms. The masses are 12, 1 and 16 for carbon, hydrogen and oxygen respectively.

Hence: (12+[6+1)n = 88.12

29n = 88.12

n = 3

The molecular formula is thus C3H3O3

6 0
3 years ago
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