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pogonyaev
3 years ago
10

In what eon did single-celled organisms appear?

Chemistry
1 answer:
fomenos3 years ago
4 0
Archean is what I think but there isn’t a clear answer
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A regular 3-d spatial arrangement of points that correspond to atom positions within a crystal is called_______?
Soloha48 [4]

Answer:

Explanation:

Lattice

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1 year ago
For this reaction: 4 Al + 3O2 = 2 Al2O3
MariettaO [177]
0.347 mols, working out shown on photo

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3 years ago
What is the product of the reaction between HCIO3 and KOH
NISA [10]

Answer:

The products are: KCl03 and H20.

Explanation:

The reaction between HC03 (chloric acid) and KOH (potassium hydroxide) is:

HC03  + KOH ----> KCl03 (KCl03 and H20) + H20 (water)

<em></em>

<em>The reaction is of the double displacement type (in this case parts of the reagents are exchanged, producing two generating new compounds).</em>

7 0
3 years ago
Element X consist of two isotopes with masses of 62.9 and 64.9. The relative atomic mass of the element is 63.6. What is th
koban [17]

Answer:

it is 50%

Explanation:

62.9x50=3145

64.9x50=3245

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4 0
2 years ago
Where in a lake is the benthic zone?
natta225 [31]

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