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hey guys im getting confused when determining what equation the reduction for water and/or oxygen is in corrosion and electrolysis. For example, the text book says in cathodic protection (sacraficial anode- zinc and iron) The reduction equation is: 2H2O + 2e- --> H2 + 2OH- why isnt...

Can anyone help me with this question? A bag contains 1 red, 1 green, 1 blue and 1 orange ball. 2 balls are chosen sucessively at random. What is the probability of choosing: a red in either draw. Is it ( R , _ ) + ( _ , R ) or ( R , _ ) + ( _ , R ) + ( R , R ). Cheers

Can you guys help me out with this question? Find the area bounded by the curve y = ln4x, the x-axis and x= 1/4 and x= 2. I forgot how to integrate ln4x. Cheers.

could someone please explain in simple terms what this means? and why beadle and tatums experiment made the hyptothesis change to one gene - one polypeptide? Cheers.

Hi guys, Can someone please explain in simple language what the multiplier means and what does it do etc... For me it is one of the most confusing sections in the course. Thankyou.

Hey guys, Do any of you guys know what the average raw mark you need to get in the HSC in order to get band 6. Cheers.

hi guys, Just wondering if any of you guys know what is happening with the Doha Round? Did they decide to scrap it, or are they still in negotiation? Cheers.

Can someone help me with these q's. 1) On a train, 8 people arrange themselves on 8 seats, 4 facing the front of the train and 4 facing backwards. If 2 people need to sit facing the front of the train, how many different seating arrangement are possible? 2) there are k seat around a...

CAn someone please help! 1)y=ax^3+ bx^2 + cx + d has a local maximum at the point (-2, 27) and a local minimum at (1,0) find the values of a, b, c and d. 2) Find the values of x for which y''= 0 if y=x(x+1)^1/2 3) A rectangle has a constant area of 36 cm^2. a) if the length of...

Please help 1a) in how many ways can 3 horses win 1st, 2nd, and 3rd places in a race (trifecta) if there are 8 horses? b)if i choose different selections of 3 horses, find the probability that i chose the horse that win the first 3 places.

hey guys, just wondering if u guys have seen the play 'Odyssey' (not Homer's) but the adaptation done by a greek guy retelling his parents journey migrating to Oz. i was wondering if it is good for a related text.

Hey, can anyone help me with this Qs. its prol simple but i find it a bit tricky 1. a box contains 3 black pens, 4 red pens and 2 green pens. if i draw out 2 pens, find the probabilitly that they are both red. for this question is it- 4/9 times 4/9?????? or 4/9 times 3/8. thanx