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zmey [24]
4 years ago
12

Which property of an atom determines what other elements it reacts with?

Chemistry
1 answer:
fomenos4 years ago
8 0

A. The number of valence electrons determines how it reacts with other elements.

<em>One to three valence electrons</em>: The element behaves like a metal and reacts with non-metals.

<em>Five to seven valence electrons</em>: The element behaves like a non-metal and reacts with metals.

<em>Four valence electrons</em>: Elements at the top of the Group are non-metals, while those at the bottom are metals.

<em>Eight valence electrons</em>: Elements have a complete octet, so they are generally unreactive.

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Hey there!

It is evident that the problem gives the mass of the bottle with the calcite, with water and empty, which will allow us to calculate the masses of both calcite and water. Moreover, with the given density of water, it will be possible to calculate its volume, which turns out equal to that of the calcite.

In this case, it turns out possible to solve this problem by firstly calculating the mass of calcite present into the bottle, by using its mass when empty and the mass when having the calcite:

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Now, we calculate the volume of the calcite, which is the same to that had by water when weights 13.5441 g by using its density:

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Thus, the density of the calcite sample will be:

\rho _{calcite}=\frac{m_{calcite}}{V_{calcite}}\\\\\rho _{calcite}=\frac{2.9817g}{1.084mL}=2.750g/mL

This result makes sense, as it sinks in chloroform but floats on bromoform as described on the last part of the problem, because this density is between 1.444 and 2.89. g/mL

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................................

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