Chemistry, 24.09.2019 07:00 Becky323

When sweat evaporates from your skin, the salts left behind on your skin represent a:
solute
solvent
solution
solution and solvent

Answers: 2

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When sweat evaporates from your skin, the salts left behind on your skin represent a solute. Because a sweat is a solution and in the solution, the solute particles are the salt. The rest of the choices do not answer the question above.

Answer from: ghughes665

The correct answer is option solute

Explanation:

Solution is formed when solute is dissolved in solvent. The amount of solute present in the solution remains lesser than that of the solvent.

Solution = Solvent + Solute

Human sweat itself is a solution in which water serves as solvent ans salt serves as solute.

So, when sweat evaporates from our skin, salt left behinds represents solute which is dissolved `in water.

Answer from: Quest

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

Answer from: Quest

Answerthe half-reaction having the greatest tendency to occur at the anode: i₂(aq) + 2e⁻ ⇄ 2i⁻ ; e = +0.53 v====== $\begin{aligned} \text{i}_2\text{\footnotesize (aq)}+2\,\text{e}^{-} & \rightleftharpoons 2\,\text{i}^{-}\text{\footnotesize (aq)}& \text{e} & = +0.53\text{ v} \\ \text{co}^{3+}\text{\footnotesize (aq)} + \text{e}^{-} & \rightleftharpoons \text{co}^{2+}\text{\footnotesize (aq)} & \text{e} & = +1.80\text{ v} \\ \text{o}_2\text{\footnotesize (g)}+4\,\text{h}^{+}\text{\footnotesize (aq)} + 4\,\text{e}^{-} & \rightleftharpoons 2\,\text{h}_2\text{o}\text{\footnotesize(l)}& \text{e} & = +1.23\text{ v} \\ \end{aligned}$ oxidation occurs at the anode. we must therefore find the half-reaction with the greatest tendency to oxidize.the given values of e are reduction potentials (the form of the half-reactions are of reduction).the lower the reduction potential, the higher the potential to oxidize. the half-cell with the lowest reduction potential will have the greatest tendency to oxidize at the anode.the half-reaction having the greatest tendency must be i₂(aq) + 2e⁻ ⇄ 2i⁻ e = +0.53 vbecause its reduction potential is the lowest out of the three.

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When sweat evaporates from your skin, the salts left behind on your skin represent a:
solute<...