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muminat
3 years ago
14

The greatest problem facing the use of nuclear power plants is _____.

Chemistry
2 answers:
FinnZ [79.3K]3 years ago
7 0

Answer:

disposal of radioactive waste

Explanation:

if too much is released, it can wipe out large parts of the country

Galina-37 [17]3 years ago
6 0

Answer: disposal of radioactive waste

Explanation:

The nuclear wastes are those wastes which are generated in the nuclear power plants during nuclear reactions. These wastes are radioactive and they have the potential to cause deadly mutations in living beings and if they come in contact with the external environment from reactor they can cause explosions. Hence, their disposal is a greatest problem.

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Determine the number of atoms in 41.0 grams of calcium, Ca. (The mass of one mole of calcium is 40.08 g.)
Dovator [93]

Hi there!

Let me know if you have questions about my answer:

6.15 × 10²⁴

Explanation:

To find the number of atoms, divide the mass of calcium (m) by its molar mass (MM). This will give you the number of moles of calcium (n).

n = m/MM            Start with a formula

=\frac{41.0g}{40.08g/mol}             Substitute values from the question

= \frac{41.0g*1mol}{40.08g}             Simplify

= \frac{41.0mol}{40.08}                 Cancel out the units "g"

= 1.022...mol          Number of moles of calcium, with 4 significant figures

Then, multiply the number of moles of calcium (n) by Avogadro's number (N_{A}) to find the number of calcium atoms.

Number.of.Ca=n*N_{A}      Start with a formula

= 1.022mol*\frac{6.022*10^{23}Ca}{1mol}      Substitute values from the question

= \frac{1.022mol*6.022*10^{23}Ca}{1mol}           Simplify

= 1.022*(6.022*10^{23}Ca)     Cancel out the units "mol"

= 6.154*10^{24} Ca                   Multiply, leave one extra digit to help round. "4" tells you to round down.

= 6.15*10^{24} Ca                     Final answer to 3 significant figures*

*When multiplying and dividing numbers, your final answer will have the same number of significant figures as the number with the least number of significant figures in the question.

40.08 has 4 significant figures. 41.0 has 3 significant figures. So, you want 3 significant figures in your final answer.

I hope this helps!

Learn more about Avogadro's number here:

brainly.com/question/1445383

Check out another answer that uses significant figures:

brainly.com/question/3721164

7 0
2 years ago
Nitrogen monoxide is produced by combustion in an automobile engine. What volume of oxygen gas is required to react completely w
Dmitrij [34]

Answer:

qwertyuiopasdfghjkl;Zxcvbnm,zxfbfa

Explanation:

5 0
3 years ago
The dashed line in the represent?
Alchen [17]

Answer:

Ok so, I would say D) because decreasing the blood glucose is actually recycling the organic chemicals. Your body uses everything in your body, filtering out the unusable chemicals and such.

Explanation:

Science :3

8 0
3 years ago
What is the definition of the word: Property (the scientific definition A makes up matter; makes up the world around us B an obj
IRISSAK [1]

Answer:

i feel like the answer is A

4 0
3 years ago
How many electrons occupy a filled 7s sublevel
Natali5045456 [20]

Answer:f has 14 electrons in 7 sublevel orbitals,d has 10 electrons in 5 sublevel orbitals,p has 6 electrons in 3 sublevel orbitals,s has 2 electrons in 1 sublevel orbital.

Explanation:

3 0
3 years ago
Read 2 more answers
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