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Re: HSC Chemistry Marathon 2016 Can someone please explain what the net charge has on the nucleus? Meaning like what's the relationship between the neutrons, protons and electrons. Does having a net charge affect the number of protons and neutrons? Kind of confused

Yeah, I was taught like that as well, that the relative strengths of conjugate acids and bases depend on the strength of the parent bases/acids. Here's an extract from my notes that helped me to understand hydrolysis reactions and finding acidity/neutral/alkalinity of substance: - CONJUGATE...

Yeah like above, the experiment may have not been conducted under standard conditions 1M electrolyte concentration, 25 degrees celsius, and 1atm pressures). However, I'm still unsure whether this reason is valid: Voltmeter while measures voltage, also uses current, and hence changes the...

I have a question, are alkenes and alkanes neutral and why? Also, is it because of the double bond in alkenes that makes it have a higher boiling point than alkanes?

Wait, hold on what's step 7.5 "Kw = 1.0*10^-14 = [H3O+]*[OH-]"

Oh cool, thanks I got it!

Hey can you also help me with this difficult POM question, I know this is the wrong thread to post this in but who cares. A scientist placed a rock on top of a few sheets of newspaper, under which was an envelope containing photographic film. After only 5 minutes he removed the photographic...

I have my half yearlies on Thursday. Do you have any tips or have anything to tell me to revise over specifically?

Thanks in advance!!

Can anyone show working out for (a), (b) and (c) I know the pH change for (d) is 0.01 to 1.01

Make one for Acidic Environment please!!!

Yeah when is it going to be online? It's exam week!

Thank you so much for doing this!!

Thanks @leehuan, that's really interesting. I'll keep that in mind when doing exam questions! Thanks for helping, appreciate it

Yo @Leehuan, thanks for replying. I understand completely for question 1 &2. However, for question 1, can you explain why it isn't (D)? And for questions 1&2, is there another method to do these questions involving moles, concentration and dilution formulas? For question 3: So you're saying...

Can anyone help me with these questions, I'm stuck on them 1. What action would result in an increase of TWO pH units of the solution? (a) Diluting 10mL of 0.01mL of 0.01 M HCl(aq) to 40mL (b) Diluting 10mL of 0.01M NaOH(aq) to 40mL (c) Diluting 10mL of 0.01M HCl(aq) to 1000mL (d)...

I was wondering when they give you questions like 1+sintheta = x You would draw the graph of y=1+sintheta and y=x. But how do you find x? You can graphically show the number of solutions these two graphs has but how can you solve it algebraically for the 'x' value of the point of intersection?

Since we're talking about the aether: NEXT QUESTION "The Michelson-Morley interferometer experiment of 1887 was a poor experiment and was doomed to fail. Actually, its only value to Physics is as an example of what failure looks like." Assess this statement, including reference to the method...

Re: MX2 2016 Integration Marathon OhHH okay thank u

Re: MX2 2016 Integration Marathon Yeah I learnt it like that as well! Is that the only way to do it, or is there a faster way?