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3 years ago

12

Which is a characteristic of nuclear fission? releases nonradioactive waste only involves the collision of two nuclei releases s

mall amounts of energy compared to fossil fuels involves the splitting of an atom into two or more fragments

1 answer:

gregori [183]3 years ago

6 0

Answer:

involves the splitting of an atom into two or more fragments

Explanation:

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26.8 moles of argon contain how many atoms?

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What does the atomic number of an element refer to on the periodic table?

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A pharmacist wishes to strengthen a mixture from 10%alcohol to 30% alcohol. How much pure alcohol should be added to 7 liters of

Tomtit [17]

Answer:

2 litres of pure alcohol will be added to make the overall concentration of 9 litres of mixture as 30%.

Explanation:

Suppose x is the number of litres added to the 10% mixture than the quantity of new mixture is given as below

$n_{old}=7$ litres
$n_{new}=7+x$ litres

Also the quantity of alcohol is given as

$q_{old}=10 \% \, of \, 7 \, litres =0.7$

$q_{added}=x$

$q_{new}= 30 \% \,of \,new\, quantity = 0.3(7+x)$

Now the equation is as

$q_{old}+q_{added}=q_{new}\\0.7+x=0.3(7+x)\\0.7+x=2.1+0.3x\\x-0.3x=2.1-0.7\\0.7x=1.4\\x=2 \, litres$

So 2 litres of pure alcohol will be added to make the overall concentration of 9 litres of mixture as 30%.

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B. Argue: Your classmate predicted the magnets are

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