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Our school provides the marking rubric for all assessments. Students who fully address all components of the rubric usually score perfect or near perfect scores.

This does happen. Usually, our school is ranked around 300 to 400, but the year my eldest sat the HSC, her English teacher, who had previously taught at James Ruse, told me, at the parent teacher interview, that the top three students in her English class (all girls as it happened) were all as...

It did briefly cross my mind before posting that OP might be at Uni given her HSC year is listed as N/A, so thanks for your post.

Since 1 mole of H2SO4 is 98.08 grams, 2.999 grams of H2SO4 is 2.999/98.08 moles = 0.0306 moles Every mole of H2SO4 produces two moles of H+. Therefore 0.031 moles of H2SO4 produces 0.062 moles of H+.

Yes - your selected responses to both questions are correct.

Did they give you the opportunity to do so? If they did and gave you the choice of options, then as a parent, I believe they’ve done the right thing because no one has a crystal ball to know how any choice will turn out.

All of the citric acid in the experiment system was originally contained in the 75mL of bottled drink. Water was added to make the solution a total volume of 250mL - in other words, the citric acid concentration became more dilute in the titration solution compared to the drink but the total...

It does sound like you are under parental pressure and peer pressure and you’ve internalised some of these pressures. I can personally relate to your experience and decided to parent the way I wish I had been parented, so my kids chose not to go to selective schools even though they got in, nor...

BTW, note that because h and c are both constants, E and λ are inversely proportional to each other, so the shorter the wavelength, the higher the energy of the electromagnetic radiation wave, which is why UV light (which has shorter wavelengths than visible light) causes sunburn and skin damage...

The question states in ‘Step 2: A 75.00 mL bottle of drink was opened’. Distilled water was added in step three for the second titration but the only citric acid present came from the bottle of drink and so after working out the total number of moles (in the 250 mL beaker of diluted solution)...

Your explanation about buffers is good, but the graph of pH change as the HCl is bubbled into the water is the shape of a negative logarithmic curve and since pH = -log[H+], the shape corresponds to a linear increase in [H+] as a constant amount is added, until the solution reaches saturation. .

I’m uncertain from the words/phrases you use whether you have the right plan or not. For example, you use the phrase ‘find moles of acid. n = m/mm’, which suggests that this will be determined through measurement which is incorrect - the correct step is to calculate the number of moles required...

I suspect that when there’s something major, we subconsciously fear failing or doing it poorly, so we try to avoid doing it at all. If you’re going to procrastinate, try to do a smaller task first (as a procrastinating strategy), then complete more smaller tasks. The positive feeling of...

Sorry synthesisFR, I did not mean to imply that this is how you study in general. I quoted your comment because you commented that 'memorising stuff' was 'boring' and that was an opportunity to make an important point. I've deleted my comment. Best wishes with your studies.

Form of tutoring is mainly help with problem solving of homework or textbook questions. Good textbooks can be recommended for students to work through with tutor's support if they wish to work ahead of their class.

For students who simply want some homework help with problem solving, short sessions by Zoom, Skype etc can be arranged at pro rata rate of $10 per 15 minutes.

Actually, he didn't work ahead in physics but he'd already finished Maths extension 2 in Year 11, so was quite strong in all the maths related areas of physics (vectors, trig, circular motion, calculus) and was able to work through the textbooks relatively quickly.

My son went through all of Pearson and then skimmed Jacaranda for revision and scored 96 in Physics which is the highest mark ever at his school (which is not even ranked in the top 400 high schools) and over twenty marks ahead of all his classmates (to give an idea of his cohort). So, it is...

It’s the formula to calculate how many moles of silver (as ions in the silver nitrate solution) there are in the initial solution, by multiplying the volume of the solution (0.100L) by the concentration of silver nitrate (1.00 mol/L).

Q2 requires a little bit of general knowledge about the pH of various solutions (I don’t know if these are described as part of the curriculum). HCl is a strong acid (red) Ammonia is a relatively strong base when dissolved in water (yellow) Lemon is a weak acid (orange) Baking soda which is a...