Recent content by bigman19191

dont do eng studies. the syllabus is extremely outdated and confusing and you're finished if you don't have a good teacher

3% is crazy icl

mid marks

oh oops, yeah you're correct. The answer does not change tho but good spot

thank you, you too

80% is quite solid, especially for a school like nsg. A raw mark of 83 usually aligns to a band 6 in the hsc, so you still have plenty of time to improve

I got a 95 in chem and now I've only got ext 2 maths and adv eng to do.

I accelerated chemistry in year 10, no problem at all.

The full explanation is in the comment

You were taught wrong

The equivalence point is around 8 pH which lines up to a volume added of 22mL. 22mL is the amount of sodium hydroxide added against acetic acid. As always, write out a balanced equation for this reaction. Then, you can calculate the number of moles of NaOH which is 0.022L x 0.15 mol/L =...

my bad

They are all acids, but yes, they were asking for organic acids.

Question 9: The two organic compounds are CH3CH2COOH (propanoic acid) and HOOCH (methanoic acid). They both contain a carboxyl functional group which is organic due to the presence of carbon. As such, the answer cannot the HCl nor H2SO4. HCN is not organic acid because there is no -COOH group.

Question 8: Ethanol and methanoic acid will reflux to produce ethyl methanoate (an ester). You should first write out an equation for this Determine the number of moles of both ethanol and methanoic acid. This can be done by using n = m/MM n(ethanol) = 3.50g / 46.068 g/mol = 0.07597 mol...