me?

Hi Everyone,

I've just been hearing a lot on the news lately about politics. Whilst I'm pretty sure we're all getting a bit tired of the same nonsense, there's this continuous phrasing in the media or people keep saying that we don't want the country to be run like QLD. And people are referencing Campell Newman.

So I'm just wondering, because I don't know myself, what is Campell Newman doing wrong, or right in QLD? And more importantly, what effect will this have, if any on the future of Australia and politics?

Thanks for any contributions. I'm aiming to get rid of this look on my face :S

I'm looking to blow dry my hair, and it seems that a ceramic brush is a good choice. But I'm just wondering if the bristles are too sharp and could do more damage than harm.

I'm good with the neural pathway to the bipolar cell, but I'm stuck with what happens to the ganglia cells and how it fires action potentials

What are the similarities and differences between intramembranous ossification and endochronal ossification?

HELP ME!!!

I'm looking to grab a new hair dryer, but I'm confused with all the options out there. There a couple from Remington, VS, and GHD that have a huge price gap. But these hair dryers all have similar functions. So I'm just wondering what should be looking out for to get a good blow dry.

I am confused about the protection of seeds and ovules

Is this correct?

The seed is protected by the carpel?

The embryo is protected by the seed?

Also what is a sporophyll and a male and female gametophyte?

If you have experimental data for three concentrations; [A], [B] and [C]. How do you find the order with respect to [A], [B] and [C]. BUT I can't find experimental data where the [C] changes and both [A] and [B] stay the same. So if that is the case, how could you find the order for [C]?

Especially with nomenclature, how would you know?

This is an exam question, but I'm not sure what they want.

I think double fertilisation, self-incompatibility, many forms of pollination and seed dispersal. Am I on the right track?

Given the following potentials

Half-reaction

Cu2+ + e ---> Cu+ Eo=0.16

Cu+ + e ---> Cu Eo=0.52

a) calculate the Ecell of this reaction

I did: 0.52 - (-0.16) = 0.68....is that right?

b)Calculate the value of the equilibrium constant for the disproportionation for Cu+

I have nooooooooo clue how to do this!!

c) If a piece of copper metal is added to a 1.0M solution of Cu2+ (aq), calcuate the equilibrium concentration of Cu+.

I'm guessing you may need to use the Nernst equation, but don't know how to apply it here.

Thanks for any help guys, I have been staring at a piece of paper for half an hour now.

Hi guys,

I'm just looking at an example, and I think they have calculated the Ecell wrong. Can you check my working out please?

Anode: -{Fe3+ + e --> Fe2+ E° = +0.77 V}

Cathode: Cl2 + 2e--> 2Cl E° = +1.36 V

Cell potential = -{E°(anode)} + E°(cathode) = -{+0.77} + 1.36 = 0.59

The above working out is from the example

BUT this is how I work out;

Ecell = higher cell -- ( reverse of the lower cell)

and using the above values, this should be

= +1.36 - (-0.77) = 2.13

So which working out is correct?

Cheers guys!

Say if you had cyclohexene, and the double bond was broken down...how do you know if this was an addition reaction or a reduction?

Also, what if it was benzene, and the double bonds were broken down? And what if it were a substituted benzene with an alkene group attached, and those bonds in that group were broken down. Sorry if this sounds like rambling guys, but would appreciate some help...i am totally lost!

http://en.wikipedia.org/wiki/Cyclopentanone --> can this have a salt?

AND, can cyclopentanol have a salt? Like when you remove the H from the hydroxyl group?

A [Ne] 3s2 3p6

B [Ne] 3s2 3p6 4s2 3d1

C [Ne] 3s2 3p6 4s1

D [Ne] 3s2 3p6 3d1

E [Ar] 4s2

How come for D, they didn't use 4s, I'm really bad with electron configuration can you please show my how you got your answer? Thanks guys :)

Let X be a random variable with mean = 5 and standard deviation  = 3, and

let X-bar be the average of a random sample of 100 values on X. The mean and

standard deviation of X are:

I don't know how to work this out, I think the X-bar mean = 5...because I think (for some reason) that the mean = X-bar mean

But I don't know how to word out the standard deviation of X-bar.

Hi guys, I'm confused about this genetic problem and the phenotypes.

So two purebreeding parents are crossed. The mother has the phenotypes black hair and eyeless and the father is wildtype. The offspring of the parents are all wild type. The ratio of the F2 is 9 wild type, 3 black hair, 3 eyeless and 1 eyeless and black hair.

What is the outline of the crosses from the parents, F1, and the offspring of the f1.

Can you check if i've done this correctly please.

Parents: bb ; ey ey x b+b+ ; ey+ ey+ --> b+b ; ey+ ey

Have i written the wild type father genotype correctly?

F1: will all be b+b ; ey+ ey --> so the phenotype of this offspring will be wildtype??? wildtype is dominant because it is the expressed phenotype of a heterozygote? is that right?

offspring of the F1 will be; b ey, b+ ey, ey+ b+, b+ ey+

offspring of the F1 will be the punnet square of b+b ; ey+ ey --> which I do the dyhybrid square on?

I can do the dihybrid cross myself if i get the offspring right, but i'm not sure if i've gotten the right symbols and stuff.

Anyways thanks if anyone can help my out.

The heights of Austrian men aged 20 to 24 are approximately normally distributed with mean 175 cm and standard deviation 5cm. The probabilty that a randomly selected 20 to 24 year old Australian male is exactly 180cm tall is.

Is this asking me, what is the exact probability of x when it is one standard deviation above the mean? Also is this normal distribution? I'm not really sure how to tackle it

and one more

The average time taken to complete an exam, X, follows a normal distribution with mean= 50 minutes and standard deviation = 25 minutes.By what time should 67% of the students have finished the exam?

Okay, how do you know whether this info tells you that this is normal distribution or not, do you just assume it is?

Please help me guys..and if anyone has any good maths and stats websites -- even links on youtube that can show me how to solve these problems I would really appreciate it!

:)

Limestone is dissolved by adding 65mL of 1.035 M HCl and the solution is transferred to a 250mL volumetric flask and diluted using distilled water. Aliquots of 10mL of this solution are then titrated against a standard solution of 0.0999M NaOH and the average titre is 19.85 mL.

Calculate the molarity of the CaCO3 in the 250 mL flask.

What I did:

mol of NaOH = (19.85/1000) x 0.0999 = 0.00198 mol

mol of HCl added initially = 0.065 x 1.035 = 0.0673 mol

mol HCl that did not react with NaOH = 0.0673 -- 0.00198 = 0.0653 mols

Now, I'm not sure where to go....

please help guys!

A 250 mL standard solution of HCl needs to be prepared for a titration.

Calculate the required volume of 15.0 M HCl required to make the standard solution so that 10.0 mL aliquots from the standard solution contain 0.0183 moles of HCl.

I'm having trouble with the "10.0ml of aliquots" were taken. I'm not sure what that means calculation wise...

Hope you're not busy watching the Olympics, thanks guys for any help :)