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Number of moles for NH3 must be one.

The most common mistake I have seen is passive voice. It's almost always better to use active voice.

Honestly, I simply hate phrasing it as "tertiary alcohols are more reactive than primary alcohols". Why? It is completely reaction-dependent and absolutely incorrect to answer this question without referring to the exact reaction you are looking at. For example, tertiary alcohols are far less...

No. The good thing is that in real life, you're much more likely to know the expected structure and NMR is used to confirm the structure.

They can form hydrogen bonds, but simple esters lack a hydrogen bond donor (i.e. no hydrogen bonded to oxygen/nitrogen/fluorine), so they can't form H-bonds with each other.

Correct. You can titrate ethanoic acid and sodium hydroxide (i.e. question is just...wrong). The weak acid is in dynamic equilibrium, so as you neutralize with NaOH, more H+ will be made until all acid has become sodium acetate. NaOH and acetic acid will give an equivalence point at pH ~9...

In LCP, you can think of energy as a reagent and increasing temperature is adding more energy to the system. If you really want to have more specifics (beyond LCP), you'll need to see the Van 't Hoff equation.

You're looking for something like the Vicat softening point. There are a few different tests that will give somewhat different results...they are arbitrary.

Definitely much less common than one or two monomers. In reality, almost all polymers you use have just a single monomer (PE, PVC, PET, PP, PS, PTFE).

You're right. Also, the K should be capitalised because the lower-case (k) is for rate constants.

Generally, it's good practice to dot point a couple of keywords that you want to use because it helps keep structure in your response. This might not be an HSC answer, but this question makes me think: Highly exothermic, increase in entropy. Only reversible under specific conditions (e.g...

A good general rule is that oxygen is almost always -2 unless it's bonded to fluorine (extremely rare).

In reality, polarity is a spectrum, not a binary property. It's best to consider the vectors (i.e. arrows denoting positive to negative) for each bond and consider their electronegativities. Symmetry works around a single atom but it's not good when considering a larger molecule. For example...

Generally, it all comes down to positive and negative charges being attracted. Dispersion forces: electron distribution fluctuates over time, so even "non-polar" compounds will have an uneven distribution of charge (but are only instantaneous). Dipole-dipole: polar compounds will have an...

I really don't have a clue what you're trying to ask here because you're being quite vague. A few questions that you might want to learn about a chemical reaction can include: Can the reaction be used to create functional compounds? Are there any known examples and how is the reaction used to...

In the case of hydrocarbons; yes, the water and organics are generally not miscible, so you get two layers and the bromine can move between the layers because it's soluble in both. Keep in mind that they could technically do the bromine water test on other samples like ethanol, and that would...

I don't think it really matters. You could get heat of combustion for each alcohol in J/g. From there, you'd try to match it with the known values J/g. There's no difference between J/g and J/mol – it's just a different measuring stick.

Pharmaceuticals: impurities like heavy metals are easily detected and quantified (all impurities need to be characterized and quantified in pharma). Mining: determine metal content in ores. Water: determine metal content in drinking water (e.g. lead) Food: similar to pharmaceuticals.

Ethanol is polar and water is polar, so they will mix.

Much more electrophilic.