3 years ago

Whats the atomic radius of tin (Sn)

1 answer:

6 0

Explanation:

the atomic radius of ( Sn) is 225pm

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jeka94

16. A
17. B
18. B
19. B
20. A
21. B
22. A
23. D
24. C
25. D
26. A
27. B

5 0

3 years ago

tia_tia [17]

The mass of NaCl sample has been 24.3 g. Thus, option A is correct.

The heat of fusion has been the amount of heat required to convert 1 mole of substance into solid to liquid state.

The heat required has been given as:

$Q=m\Delta H$

<h3>Computation for the mass of NaCl</h3>

The given solution has heat of fusion, $\Delta H_{fus}=30.2\rm kJ/mol$

The heat required to melt the sample has been, $Q=732.6\;\rm kJ/mol$

Substituting the values for the mass of NaCl

$\rm 732.6\;kJ/mol=Mass\;\times\;30.2\;kJ/mol\\\\
Mass=\dfrac{732.6}{30.2}\;g\\\\
 Mass=24.3\;g\\$

The mass of NaCl sample has been 24.3 g. Thus, option A is correct.

Learn more about heat of fusion, here:

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3 years ago

elena-s [515]

Hi I'm in Chemistry too this year,
I believe D is correct because usually physical changes are things like density, color or quantity.

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3 years ago

Stolb23 [73]

I think the best answer would be D. Dolphin!

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3 years ago

kramer

Bronsted lowry bases

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3 years ago