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GrogVix [38]
3 years ago
11

Which statement about fusion reactors is true? a Enriched uranium isotopes are used as fuel in fusion reactors. b Fuel for fusio

n reactors can be extracted form ocean water. c Fusion reactors are now replacing fission reactors. d Fusion reactors produce radioactive waste as spent fuel .
Chemistry
1 answer:
trapecia [35]3 years ago
6 0

Answer:

b Fuel for fusion reactors can be extracted from ocean water.  

Explanation:

The fuel is deuterium, which makes up 0.02% of the hydrogen atoms in water. The oceans contain more than a billion cubic kilometres of water, so that's a lot of deuterium.

a is wrong. The fuel for fusion reactors is deuterium.

c is wrong.  There is much research, but there are no large-scale fusion reactors in operation.

d is wrong. Fusion reactors do not produce radioactive waste as spent fuel. Most of the radioactive waste would be the reactor core itself.

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When making calculations, you should rely on the precision of your measured data.
ELEN [110]
True 

Im happy i could help you today 

have a great rest of ur week :)
3 0
3 years ago
A student used 10mL water instead of 30mL for extraction of salt from mixture. How may this change the percentage of NaCl extrac
34kurt
It will be extracted only 1/3 of NaCl less in 10 mL of water than in 30 mL of water.

If it is known that solubility of NaCl is 360 g/L, let's find out how many NaCl is in 30 mL of water:

360 g : 1 L = x g : 30 mL

Since 1 L = 1,000 mL, then:
360 g : 1,000 mL = <span>x g : 30 mL

Now, crossing the products:
x </span>· 1,000 mL = 360 g · 30 mL
x · 1,000 mL = 10,800 g mL
x = 10,800 g ÷ 1,000 
x = 10.8 g

So, from 30 mL mixture, 10.8 g of NaCl could be extracted.

Let's calculate the same for 10 mL water instead of 30 mL.

360 g : 1 L = x g : 10 mL

Since 1 L = 1,000 mL, then:
360 g : 1,000 mL = <span>x g : 10 mL

Now, crossing the products:
x </span>· 1,000 mL = 360 g · 10 mL
x · 1,000 mL = 3,600 g mL
x = 3,600 g ÷ 1,000 
<span>x = 3.6 g
</span>
<span>So, from 10 mL mixture, 3.6 g of NaCl could be extracted.
</span>
Now, let's compare:
If from 30 mL mixture, 10.8 g of NaCl could be extracted and <span>from 10 mL mixture, 3.6 g of NaCl could be extracted, the ratio is:
</span>3.6/10.8 = 1/3

Therefore, i<span>t will be extracted only 1/3 of NaCl less in 10 mL of water than in 30 mL of water.
</span>
7 0
3 years ago
Which of the solutions below have the same molar concentration as solution x? check all that apply?
frosja888 [35]
The molar concentration of any solution is the number of moles of solute present per liter of solution. Therefore, for any solution to have the same molarity as another, it must have the same number of moles per liter. The mathematical expression of this is:

Molar concentration (M) = moles (n) / Liter (L)
7 0
3 years ago
Which change occurs at the anode in an operating electrochemical cell?
murzikaleks [220]

Answer:loss of electrons

Explanation:

6 0
4 years ago
9)
nikitadnepr [17]

Answer: The answer is B) 1.00 M CaCl2

Explanation: I just did it on usatestprep and it said it was correct .

8 0
3 years ago
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