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Gala2k [10]
3 years ago
10

What process uses analysis of the decay of atomic particles to determine exact age?

Chemistry
2 answers:
padilas [110]3 years ago
4 0

Answer:

Radioactive dating

Explanation:

Radioactive dating measures the ratio of C¹²(normal) and C¹⁴ (radioactive) in fossils to determine the exact age of the specimen. C¹⁴ is unstable and has a half life of 5730 years, so as the organism ages the amount of C¹⁴ diminishes but the amount of C¹² remains constant. The ratio of C¹⁴ to C¹² is used to analyze the decay of atomic particles to determine exact age.

Lesechka [4]3 years ago
3 0

Answer:

A

Explanation:

Because carbon-14 and uranium-235 are used in radioactive dating.

Hope it helped!

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Choose the correct total number of electron domains (bonding and nonbonding) about a central atom if the angle(s) between the el
slamgirl [31]

Answer:

The central atom has 3 electron domains.

Explanation:

According to the Valence Shell electron pair repulsion theory (VSEPR) put forward by Gillespie and Nyholm in 1957, the shape of a molecule is determined by repulsion between all the electron pairs (electron domains) present in the valence shell.

The electron pairs or electron domains are known to position themselves as far apart in space as possible in order to minimize repulsions.

Hence, when the central atom of a molecule contains three electron domains, they are positioned at an angle of 120° from each other to minimize repulsions. Hence the answer.

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What type of effects do prostaglandins produce on smooth muscles? List two examples.
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3 0
3 years ago
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3 0
3 years ago
In a normal cellular protein, where would you expect to find a hydrophobic amino acid like valine?
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5 0
3 years ago
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ycow [4]
The formula of alcohol are
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hope this help 
4 0
3 years ago
Read 2 more answers
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