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-Dominant- [34]
3 years ago
6

A student is working with four different solid substances: sodium calcium copper and iodine. which substance is most likely to b

reak easily into many pieces?​
Chemistry
2 answers:
Alenkasestr [34]3 years ago
5 0

Answer:

iodine

Explanation:

<em>The substance that can break easily from the list of substances is the </em><em>iodine</em><em>.</em>

<u>Iodine exists as a molecular solid and hence, the molecules are held together by weak Van Der Waal's forces. Iodine thus has characteristic properties of typical molecular solids which include being able to be broken into pieces easily (brittle), low melting and boiling points, insolubility in water, among other properties.</u>

The characteristics of iodine are unlike sodium, calcium, and copper that exist as metal which is hard, tough with high tensile strengths.

irakobra [83]3 years ago
3 0

Answer:

the correct answer is iodine

<*> blue missssst <*>

Explanation:

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M\!\left(\mathrm{CO_2}\right) = 12.011 + 2\times 15.999 = 44.009\; \rm g \cdot mol^{-1}.

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If carbon dioxide behaves like an ideal gas, it should satisfy the ideal gas equation when it is inside a container:

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  • V is the volume of the container.
  • n is the number of moles of particles (molecules, or atoms in case of noble gases) in the gas.
  • R is the ideal gas constant.
  • T is the absolute temperature of the gas.

Rearrange the equation to find an expression for P, the pressure inside the container.

\displaystyle P = \frac{n \cdot R \cdot T}{V}.

Look up the ideal gas constant in the appropriate units.

R = 8.314 \times 10^3\; \rm L \cdot Pa \cdot K^{-1} \cdot mol^{-1}.

Evaluate the expression for P:

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Apply dimensional analysis to verify the unit of pressure.

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3 years ago
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