Predictions for Chemistry 2014 HSC? (4 Viewers)

[faisalabdul16]

I may know the entire syllabus, but I know heaps more stuff that is not required by the syllabus because im going to state rank hahaha

ftfy

 

[SuchSmallHands]

ftfy

Haha thanks, yeah autocorrect must have screwed up on my comment or something? That's definitely what I meant to write haha

 

[faisalabdul16]

Haha thanks, yeah autocorrect must have screwed up on my comment or something? That's definitely what I meant to write haha

Darn autocorrect. Always tampering with what an individual wants to say

 

[SuchSmallHands]

Darn autocorrect. Always tampering with what an individual wants to say

It's a struggle haha.

If anyone is desperate as I am to not do (in my case, start... eek) English study, I like this question from 2010. It's not difficult, but it's phrased differently than you'd expect.

In the margarine industry, alkenes are often hydrogenated to convert unsaturated oils into solid fats that have a greater proportion of saturated molecules. Using ethene as an example, write an equation for this reaction and state the type of reaction this represents.

 

[faisalabdul16]

It's a struggle haha.

If anyone is desperate as I am to not do (in my case, start... eek) English study, I like this question from 2010. It's not difficult, but it's phrased differently than you'd expect.

In the margarine industry, alkenes are often hydrogenated to convert unsaturated oils into solid fats that have a greater proportion of saturated molecules. Using ethene as an example, write an equation for this reaction and state the type of reaction this represents.

Would it be wrong if someone said hydrogenation?

 

[enigma_1]

Would it be wrong if someone said hydrogenation?

hmm perhaps because they've said it in the question already hahahah

I doubt chem will ever be that easy ((

 

[SuchSmallHands]

I think the use of the word 'hydrogenation' and all that stuff about margarine would have thrown quite a few people to be honest. It definitely would have in my class.

 

[Queenroot]

Hydrogenated fats, never eat them.

 

[faisalabdul16]

But then isnt it correct?

 

[enigma_1]

If hydrogenation is your only answer then no. You must mention addition reaction mainly, and then you can say hydrogenation as a second thing.

 

[faisalabdul16]

If hydrogenation is your only answer then no. You must mention addition reaction mainly, and then you can say hydrogenation as a second thing.

okey


calculation question pls

 

[GOsie]

okey


calculation question pls

What's 9 + 10

 

[Speed6]

What's 9 + 10

Is it 26? I'm not too sure...

Can anyone else confirm?

 

[Queenroot]

okey


calculation question pls

Faisal Abdul wanted to find out how much ammonia was in his pee, so he titrated 25ml aliquots of his pee with 0.020M HCl 4 times.
The volume of the titres was as follows:
1. 27.98ml
2. 28.78ml
3. 27.78ml
4. 27.65ml

What was the concentration of ammonia in his pee?

 

[Queenroot]

literally made that up the spot, don't ask me if something doesn't make sense

 

[faisalabdul16]

Faisal Abdul wanted to find out how much ammonia was in his pee, so he titrated 25ml aliquots of his pee with 0.020M HCl 4 times.
The volume of the titres was as follows:
1. 27.98ml
2. 28.78ml
3. 27.78ml
4. 27.65ml

What was the concentration of ammonia in his pee?

no k

 

[Queenroot]

Someone answer it

 

[faisalabdul16]

Someone answer it

are we assuming the pee only consists of ammonia?

 

[enigma_1]

are we assuming the pee only consists of ammonia?

gg

 

[Queenroot]

are we assuming the pee only consists of ammonia?

Yes.

Could have given you most of the ions but I decided to simplify it to ammonia instead of urea now do it