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3 years ago

Which of the following groups of atoms are most likely to have similar properties?

2 answers:

vladimir1956 [14]3 years ago

3 0

The third option because the elements mentioned in that selection are in the same group, they must have similar properties.

Otrada [13]3 years ago

3 0

Its 3 because i got it right on odysseyware and passed summer school

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What is the percentage composition of each element in ammonia, NH3?

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3 years ago

Determine the energy released per kilogram of fuel used. given mev per reaction, calculate energy in joules per kilogram of reac

tatuchka [14]

The energy released in nuclear reactions are far larger than that released in chemical reactions due to the release of nuclear energy from the nucleus.

<h3>Why is the energy released in a reaction?</h3>

Energy is released in a reaction due to the breaking of bonds are well as formation of bonds.

The quantity of energy released in reactions differs according to the reaction type involved.

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The energy, E released in nuclear reactions is given by the formula below:

$E = mc^{2}$

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Therefore, the energy released in nuclear reactions are far larger than that released in chemical reactions.

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6 0

2 years ago

The density of a metal cube is 8 x103 kg/m3. Convert

Rom4ik [11]

Answer:

Explanation:

[peirod4

4 0

4 years ago

What is the concentration of the hydroxide ion? Given that the concentration of the hydronium ion is 2.3 X 10^-7 M

professor190 [17]

Answer:

4.35 * 10^-8 M

Explanation:

Since the concentration of the hydronium ion= 2.3 X 10^-7 M

And we know that;

[H3O^+] [OH^-] = 1 * 10^-14

[H3O^+] = concentration of the hydronium ion

[OH^-] = concentration of the hydroxide ion

So;

[OH^-] =1 * 10^-14/[ H3O^+]

But [H3O^+] = 2.3 X 10^-7 M

[OH^-] = 1 * 10^-14/2.3 X 10^-7

[OH^-] = 4.35 * 10^-8 M

8 0

3 years ago