What is the technique for calculating the age of remains from the amount of C-14 that is left in once alive living things?

Chemistry

2 answers:

Marizza181 [45]4 years ago

5 0

Carbon 14 dating? is that one of your choices

NeX [460]4 years ago

5 0

Answer:

Radiocarbon dating

Explanation:

The radiocarbon dating method is used in order to determine the age of an object (fossil) by using the unstable radioactive Carbon isotopes. It is very widely used and is efficient for dating objects that are of very recent age.

The half life of Carbon-14 is approximately 5700 years. The half life is defined as the time required to decay half of its original composition. The carbon-14 is an unstable element and after it is completely decayed, it turns into Nitrogen-14, which is a stable element.

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Explain how astronomers use spectrographs to identify the composition of a star.

Gwar [14]

Each element absorbs light at specific wavelengths unique to that atom. When astronomers look at an object's spectrum, they can determine its composition based on these wavelengths. The most common method astronomers use to determine the composition of stars, planets, and other objects is spectroscopy.
hope this helps you! :-)

4 0

3 years ago

How many moles of sodium atoms do you have if you have 5.60 ~

Papessa [141]

Answer:

0.93 mol

Explanation:

Given data:

Number of moles of Na atom = ?

Number of atoms = 5.60× 10²³

Solution:

Avogadro number:

The given problem will solve by using Avogadro number.

It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.

1 mole = 6.022 × 10²³ atoms

5.60× 10²³ atoms × 1 mol / 6.022 × 10²³ atoms

0.93 mol

3 0

3 years ago

What element has greatest atomic radius from group 3?

stira [4]

Answer:

i think iron

Explanation:

i not sure with my ans

6 0