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3 years ago

8

What determines the reactivity of a metal?

1 answer:

fgiga [73]3 years ago

7 0

The reactivity of a metal is determined by how tightly the metal holds onto the electrons in the outermost energy levels (valence electrons)

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Which is not an issue with waste from nuclear energy?

Mkey [24]

Answer:

correct option is A) atmospheric pollutants

Explanation:

Nuclear power plant do not produce air pollution in the form of carbon dioxide and sulfur dioxide.
Nuclear as radioactive waste is hazardous to all kind of life and the environment.
Long-term storage of radioactive waste is required. It is important that waste stabilization is a form that does not react or deteriorate for years.
If nuclear waste is wasted in the atmosphere or in the oceans and lagre lakes, it eventually comes into contact with organisms.

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2 years ago

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Based on the ion structure, which of the following elements would form a bond with calcium in a one to one ratio and why?

blsea [12.9K]

Answer:

a

Explanation:

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2 years ago

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What is the hydrosphere and<br> Where is<br> it found ?

Anastasy [175]

Answer:it is all of the body's of water on the earth such as lakes seas and something over the earthearth's serface like clouds

Explanation:o

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1 year ago

A gas of certain mass occupies a volume of 650cubic centimeterunder a pressure of 750mm Hg.calculate the pressure under which th

lapo4ka [179]

Answer: 833.3mmHg

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3 years ago

For the titration of a weak acid with a strong base what is the pKa of the weak acid if the pH is 6.72 at the equilvalence point

Paladinen [302]

Explanation:

We have to calculate $pK_{a}$ value.

It is known that at the equivalence point concentration of acid is equal to the concentration of anion formed.

Hence, [HA] = $[A^{-}]$

Now, relation between $pK_{a}$ and pH is as follows.

pH = $pK_{a} + log \frac{[A^{-}]}{[HA]}$

Putting the values into the above formula as follows.

pH = $pK_{a} + log \frac{[A^{-}]}{[HA]}$

4.23 = $pK_{a} + log (1)$ (as [HA] = $[A^{-}]$ )

$pK_{a}$ = 4.23 (as log (1) = 0)

or, $pK_{a}$ = 4

Thus, we can conclude that $pK_{a}$ of given weak acid is 4.

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2 years ago