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Likurg_2 [28]
3 years ago
11

What do the brackets around a chemical mean, like for [h + ]?

Biology
1 answer:
jeka943 years ago
3 0
The brackets around a chemical formula represents or means the molar concentration of the given compound or element. For example; [H+] means the molar concentration of hydrogen ions, [H2O] means the molar concentration of water molecules, [NaCl] is the molar concentration of sodium chloride, and so forth. 
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A fossil is found to have a 14c14c level of 73. 73. 0 ompared to living organisms. how old is the fossil?
AnnyKZ [126]

If the 14C level of fossils is 73% compared to living organisms. It will be 2602 years.

<h3>What is radiocarbon dating? </h3>

This method is used to estimate the relative age of carbon-based materials. This is done usually for fossils which originate from living organisms.

This age is estimated by estimating the percentage of carbon-14 isotopes in the fossil. This is done by comparing this percentage to a reference standard used internationally. This method is of tremendous use in palaeontology. It has also found its use in hydrology, oceanography, geology etc.

Fossil age is determined by

At = (Ao) x (1 - 0.5)^(t/h)

Here, At/Ao = 0.73

So, 0.73 = 0.5^(t/5730)

Therefore, t = 2602 years

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3 0
2 years ago
What is pH and how do we measure it?
vitfil [10]

Answer:

ph is unit of measuring acid and base

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3 0
3 years ago
What type of fossil fuel is made from trees, ferns, mosses, and other marsh plants?
Anni [7]
The answer will be the A coal. 

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7 0
3 years ago
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The microtubules that form in prophase and control the chromatids are called___
scoundrel [369]
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6 0
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The environmental benefits of composting include all of following EXCEPT____________.
andriy [413]

Answer:

B. generation of rich organic fertilizer.

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