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3 years ago

How are archaeological finds dated?

Chemistry

2 answers:

Paladinen [302]3 years ago

7 0

Explanation:

Archaeologists use that assumption, called the law of superposition, to help determine a relative chronology for the site itself. Then, they use contextual clues and absolute dating techniques to help point to the age of the artifacts found in each layer.

Whitepunk [10]3 years ago

3 0

Answer:

Radiotherapy

Explanation:

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Stellar fusion produces atoms up to and including ___________ Question 51 options: Helium (atomic number 2) Carbon (atomic numbe

Ganezh [65]

Explanation:

Stellar fusion is the nuclear reaction that occurs in stars.
In this reaction, the nuclei build to form heavier elements.
Stars fuse elements of lighter ones to heavier ones
This fusion reaction occurs in their cores.
During this process, a lot of energy is released.
This process is also known as stellar nucleosynthesis as there is a synthesis of the different nucleus.
Stellar fusion produces lighter elements of many types including iron(Fe) and nickel(Ni) in many of the giant stars.
These elements remain trapped in the cores of stars.

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3 years ago

Please answer this question only if you know the answer! 30 points and brainliest!

gulaghasi [49]

i am 50\ 50 on A and C

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3 years ago

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Where does energy in an ecosystem come from?

Novay_Z [31]

Answer:

Energy in an ecosystem comes from the Sun.

Explanation:

It is a major source of energy for organisms, plants and the whole ecosystem basically.

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3 years ago

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A binary ionic compound is known to contain a cation with 51 protons and 48 electrons. The anion contains one-third the number o

7nadin3 [17]

Answer:

$SbCl_3$

Explanation:

The cation contains 51 protons and 48 electrons. The electrons are only lost not protons, so the element which corresponds to atomic number 51 is the cation which is Antimony (Sb).

Also, the charge on the cation is 51 - 48 = 3

This is because neutral atom contains the same number of electrons as protons.

Given the anion has one-third protons as cation which means thta:

Number of protons in anion = $\frac {51}{3}=17$

This corresponds to chlorine atom. The electrons are 1 greater than protons means that it has gain 1 electron.

So,

Sb Cl

3 1

Cross multiply the valency.

So, formula is $SbCl_3$

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3 years ago

Please help with chemistry ASAP!

iren [92.7K]

Carbon

Have a nice day

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3 years ago