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Ipatiy [6.2K]
4 years ago
10

If a liquid is heated, which of the following happens to both its energy content and the speed of its particles? A. The energy r

emains the same; the speed increases. B. The energy remains the same; speed remains the same. C. The energy increases; the speed decreases. D. The energy increases; the speed increases.
Chemistry
1 answer:
mario62 [17]4 years ago
4 0
D!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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What does the term density mean?
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Answer - the degree of compactness of a substance.
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Which of the following families on the periodic table is likely to take on 2 electrons?. . . family 2. family 12. family 16. fam
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Answer: Family 16 is most likely to accept 2 electrons.

Explanation:

Family 16 has the electronic configuration ns^{2} np^{4}. As to attain stability the p orbital will readily accept 2 electrons.

Therefore, family 16 is most likely to accept 2 electrons. Family 16 is also known as chalcogens.

Whereas, family 2 has the electronic configuration (n-1)s^{2} ns^{2}. As the s orbital is completely filled  so there is no need to accept 2 electrons.

Family 12, and family 18 has the electronic configuration [Ar] nd^{10} ns^{2} and [He]ns^{2} np^{6} respectively.

Both family 12 and 18 has completely filled orbitals so it will not accept any electrons.


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4 years ago
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K2so4 is a strong electrolyte. determine the concentration of each of the individual ions in a 0.450 m k2so4 solution.
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<em>Answer:</em>

  • Conc. of K+ ions = 0.90 M
  • Coc. of SO4∧-2 = 0.45 M

<em>Explanation:</em>

<em>Data Given:</em>

Conc. of H2SO4 = 0.450

As sulphoric acid is a strong electrolyte, it completely dissociate into ions.

H2SO4 ⇆   2K+   +   SO4∧-2

.450 M K2SO4 means that there is .450 mols of K2SO4 in every liter of solution.

                      K2SO4  :  K+                                          K2SO4  : SO4∧-2

                          1      =     2                                                   1     =    1

                     0.450   =   2× 0.450 = 0.90                     0.450 =  0.450×1 = 0.450

<em> Result:</em>

Conc. of potassium ion will be 0.90M    

Coc. of sulphate ions will be 0.45 M

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Which subatomic particle has a negative charge in the atom?
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it B

Explanation:

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A student is investigating acceleration using balls with
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Answer:

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