Predictions for Chemistry 2014 HSC? (5 Viewers)

[Futuremedstudent]

Do you also do 4u math?

nope.

 

[SuchSmallHands]

A 0.2845 g sample of impure sodium carbonate required 24.65 mL of an HCl solution for
titration. A 0.2204 g sample of pure sodium carbonate required 20.06 mL of the HCl solution
of the same concentration.
What is the percentage of sodium carbonate in the sample?

Is it 95.18%? (that's probably wrong, I did that in a verrryyy weird way)

 

[faisalabdul16]

I'm sure any good math student would assert that less emphasis on rote learning and more emphasis on understanding and deriving the formulas is a lot more beneficial. Isn't that why logical students are better than rote students at math? (I don't see any bio people doing well in 4U as a massive generalisation lol)

Pshh and you think chem is logical har har

Bold part - I agree and i am one of the minority who love both the subjects and are doing well hahah what's your definition of well? Out of 120 what do you think is 'well', in HSC papers or trial papers whichever you prefer

 

[Futuremedstudent]

Bold part - I agree and i am one of the minority who love both the subjects and are doing well hahah what's your definition of well? Out of 120 what do you think is 'well', in HSC papers or trial papers whichever you prefer

I bet your definition of well is 1-3/120.. while mine is lower

 

[QZP]

95.20%

(24.65/20.06 x 0.2204) /0.2845

 

[QZP]

Bold part - I agree and i am one of the minority who love both the subjects and are doing well hahah what's your definition of well? Out of 120 what do you think is 'well', in HSC papers or trial papers whichever you prefer

Is there 120 marks in the bio paper?? or is this a rank.
Paper then 90+

 

[faisalabdul16]

Is it 95.18%? (that's probably wrong, I did that in a verrryyy weird way)

Yeap

 

[faisalabdul16]

Is there 120 marks in the bio paper?? or is this a rank.
Paper then 90+

I meant 4u maths lol

 

[SuchSmallHands]

I'm sure any good math student would assert that less emphasis on rote learning and more emphasis on understanding and deriving the formulas is a lot more beneficial. Isn't that why logical students are better than rote students at math? (I don't see any bio people doing well in 4U as a massive generalisation lol)

Pshh and you think chem is logical har har

Maybe I'm disillusioned because my school is weird or something, but yeah actually, the rote kids smash math. My best friend is crazy good at math, but also really lazy. Even though he's more logical than the others in his class, and is the only one who actually understands what he's doing, the others have all memorised exactly how to respond to questions that look a certain way, while he hasn't remembered half the formulae he needs for an exam.

 

[QZP]

Oh.. well then E4 at least

 

[SuchSmallHands]

Yeap

Just because I don't do maths doesn't mean I can't do maths

 

[QZP]

Is my solution wrong or something? I don't accept this 0.02 difference. ONE OF US IS RIGHT AND ONE IS WRONG!

 

[faisalabdul16]

I bet your definition of well is 1-3/120.. while mine is lower

 

[SuchSmallHands]

Is my solution wrong or something? I don't accept this 0.02 difference. ONE OF US IS RIGHT AND ONE IS WRONG!

Probably me, I rounded before the end because I was lazy and this isn't my HSC haha

 

[QZP]

Oh ok. I will be doing phys now goodbye

 

[faisalabdul16]

Maybe I'm disillusioned because my school is weird or something, but yeah actually, the rote kids smash math. My best friend is crazy good at math, but also really lazy. Even though he's more logical than the others in his class, and is the only one who actually understands what he's doing, the others have all memorised exactly how to respond to questions that look a certain way, while he hasn't remembered half the formulae he needs for an exam.

Hence why the rote learners in math will tend to do bad in HSC papers as questions are more application based. Their not textbook questions, or predictable trial papers.

 

[faisalabdul16]

Probably me, I rounded before the end because I was lazy and this isn't my HSC haha

SSH is right

 

[SuchSmallHands]

SSH is right

Queen of maths.

 

[zhertec]

I didn't round anything and got 95.195% so I would of got QZP's answer..weird..

 

[QZP]

wtf I got it wrong?? How did you do it