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2 years ago

What is a form of potential energy that is due to relative positions of the particles within a materials.

Chemistry

1 answer:

Salsk061 [2.6K]2 years ago

4 0

I think is D I hope it helped :)

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Oxygen is composed of three isotopes: oxygen-16, oxygen-17 and oxygen-18 and has an average atomic mass of 15.9982 amu. Oxygen-1

Irina-Kira [14]

Answer:

The percent abundance of oxygen-18 is 1.9066%.

Explanation:

The average atomic mass of oxygen is given by:

$m_{O} = m_{^{16}O}*\%_{16} + m_{^{17}O}*\%_{17} + m_{^{18}O}*\%_{18}$

Where:

m: is the atomic mass

%: is the percent abundance

Since the sum of the percent abundance of oxygen isotopes must be equal to 1, we have:

$1 = \%_{16} + \%_{17} + \%_{18}$

$1 = x + 3.2 \cdot 10^{-4} + \%_{18}$

$\%_{18} = 1 - x - 3.2 \cdot 10^{-4}$

Hence, the percent abundance of O-18 is:

$m_{O} = m_{^{16}O}*\%_{16} + m_{^{17}O}*\%_{17} + m_{^{18}O}*\%_{18}$

$15.9982 = 15.972*x + 16.988*3.2 \cdot 10^{-4} + 17.970*(1 - 3.2 \cdot 10^{-4} - x)$

$x = 0.980614 \times 100 = 98.0614 \%$

Hence, the percent abundance of oxygen-18 is:

$\%_{18} = (1 - 3.2 \cdot 10^{-4} - 0.980614) \times 100 = 1.9066 \%$

Therefore, the percent abundance of oxygen-18 is 1.9066%.

I hope it helps you!

8 0

2 years ago

Three isotopes of argon occur in nature. Calculate the average atomic mass of argon given the following relative atomic masses a

Volgvan

Answer:

whats the question

Explanation:

6 0

2 years ago

Read 2 more answers

What does mass change to and what does it do

Nataly [62]

Answer:

Mass is the amount of matter in an object and does not change with location.

Explanation:

4 0

3 years ago

Is flat soda mixture or pure substance?

Nesterboy [21]

The answer should be Pure substance

5 0

2 years ago

Select the correct answer. Which statement best describes how chemical equations demonstrate conservation of mass? OA The number

timofeeve [1]

Answer: C. The number of atoms of each element is the same on each side of the equation.

Explanation:

The Law of Conservation of Matter shows that it is not possible for matter to either be created nor for it to be destroyed so the number of atoms of each element on the reactant side of the equation must equal the number of atoms in each element on the product side of the equation.

This is why the following equation is incomplete:

H₂ + O₂ ⇒ H₂O

The oxygen atoms are not the same on either side.

Equation will therefor have to be balanced which will make it:

2H₂ + O₂ ⇒ 2H₂O

Notice now that atoms are the same on both sides.

8 0

2 years ago