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4 years ago

I WILL RATE BRAINLIEST! I JUST NEED HELP!

2 answers:

6 0

If they're half life, wouldn't that mean every 5730 years I would double? So 12.5 x 2= 25, 25 x 2 = 50, and 50 x 2 = 100% carbon-14. It doubled 3x so the 5730 x 3 = amount of years the volcano erupted

ycow [4]4 years ago

5 0

It erupted 17,190 years ago.
It has a half life of 5,730 years. Therefore, when it has 50% remaining, it has lived for 5,730 years. When it has 25% remaining, it has lived for 11,460 (5730+5730). When it has 12.5% remaining (25/2), then it has lived 17,190 years (11,460 + 5730).
:D

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Easy one! giving brainly if correct

Dafna1 [17]

Answer: glass is not considered as solute.

Extra's:

A solute is a substance that gets dissolved in a solvent. ... The solutes in air are oxygen, argon, and carbon dioxide gas, as well as water vapour.

Sugar is a solute in the solvent water. Sugar is one of the most soluble solutes in water.

Also solute is a powder that can be dissolved in solvent like water. here baking soda is a solute.

5 0

3 years ago

When plants and animals die, their bodies are decomposed by organisms such as bacteria or fungi. Which statement is true regardi

zimovet [89]

The Answer Is B. I'm sure of it 86% sure

8 0

4 years ago

Read 2 more answers

[25 pts] When a 14.2g sample of a compound containing only mercury and oxygen is decomposed, 13.2g of Hg is obtained. What is th

Agata [3.3K]

Answer:

% composition of Hg = 93 %

% composition of O = 7 %

Explanation:

Data Given:

mass of total sample = 14.2 g

mass of mercury (Hg) = 13.2 g

percent composition of Hg =

percent composition of O =

Solution:

First find mass of oxygen

As this compound only have two components that is oxygen and mercury

upon decomposition it gives 13.2 g mercury

now to find mass of oxygen we have to subtract mass of mercury from total mass of sample

Mass of oxygen = Total mass of sample - mass of Mercury

Mass of oxygen = 14.2 g - 13.2 g

Mass of oxygen = 1 g

Now to find percent composition of Hg and Oxygen

% composition = component mass / total mass of sample x 100. . . .(1)

For % composition of mercury Hg

Put values in equation 1

% composition of Hg = 13.2 g / 14.2 g x 100

% composition of Hg = 93%

For % composition Oxygen (O)

Put values in equation 1

% composition of O = 1 g / 14.2 g x 100

% composition of O = 7 %

6 0

3 years ago

How many neutrons in the following elements below

Wittaler [7]

Answer:

its atomic number is 92 and its atomic mass is 238(92+146).

Explanation:

For example,Silicon has 14 protons and 14 neutrons.its atomic number is 14 and its atomic mass is 28

8 0

3 years ago

Calculate the average atomic mass for the following element given information about the relevant isotopes: (Isotope 1) Mass = 20

polet [3.4K]

Answer:

The average atomic mass of given element is 20.18 amu.

Explanation:

Given data:

Abundance of 1st isotope mass 20 amu = 90.92%

Abundance of 2nd isotope mass 21 amu = 0.257%

Abundance of 3rd isotope mass 22 amu = 8.82%

Average atomic mass = ?

Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass) + (abundance of 3rd isotope × its atomic mass) / 100

Average atomic mass = (90.92×20)+(0.257×21)+(8.82×22) /100

Average atomic mass = 1818.4 + 5.397 +194.04 / 100

Average atomic mass = 2017.819 / 100

Average atomic mass = 20.18 amu.

The average atomic mass of given element is 20.18 amu.

5 0

3 years ago