Recent content by soopo

Other possible medicines which were probably in contact with Zinc ions: - 1 tablett MADOPARK QUICK MITE: Levodop. 50 mg, benserazid. hydrochlorid. 14,25 mg respond. benserazid. 12,5 mg, constit. q. s. - Brufen (ibuprofen) - Selegilin I managed to duplicate a similar experiment without Zinc...

I was giving today zinc -tablet to a patient directly to her stomach because she cannot move. The tube which I first used was not clean so it contained some medicine of the last use. The tube turned light blue like copper ion -blue after I inserted the zinc water to the tube. I have not...

There is no grounding in the house so the electricity could not escape and it went to the air. Ok. Probably, the micro-oven gives the given electric shock always with the full power. I do not want to test it. Probably, the shape or nature of the object does not affect the formation of the...

I put 1 litre of ice cube to the micro-oven which is age is about 30 years. The shape of the ice cube was a little bit circular. I set the power of the micro to the maximum. There were continuous white electric shocks inside the micro. The ice cube contained a little fish which contained some...

Homework Statement The data obtained in the experiment is in the graph http://img213.imageshack.us/f/energycalibration.png/ My teacher says that do a linear energy calibration for photopeaks. The Attempt at a Solution A photopeak seems to be a peak caused by the emission of photons...

WOOT! Thank you! I did not get it that it is the monomer of the PGA. It seems that PGA does not have different monomers: only the one. I now see that the monomer really make the polymer an ester.

The form of the ester is right: http://en.wikipedia.org/wiki/Ester One part of PGA has the above form. I had only the given part of PGA in the exam. It was my first time to see PGA. I am trying to deduce somehow that PGA has an ester -part. PGA is poly glycosidic acid. This means that there is...

Esters have the form R-CO-OR'. PGA has the form [-O-CH3-CO-]. It is a polyester that means an ester according to Wikipedia. I cannot see why it is an ester. It does not have two oxygens bind to one carbon. Why is PGA an ester?

What is the equilibrium constant of the reaction? NO_{3}^{-} + NADH + H^{+} <=> NO_{2}^{-} + NAD+ + H_{2}O I wrote in an exam that the [NADH] and [H2O] remain constant in the reaction. So my answer is K = \frac {[NO_{2}^{-}] [NAD^{+}]} {[NO_{3}^{-}] [H^{+}]} which is wrong. The...

Homework Statement The series is at http://img203.imageshack.us/i/snapshot1g.png/ The Attempt at a Solution The LHS series diverges. However, the term 1/n seems to be make the series to converge. However, I am not completely sure how to proceed in proving that the series converges. I should...

My y -value [itex] obtained by differentiation is different from the one obtained by substitution that is (1, -e^(-t)) != (t^2 + 1, -2e^(-t))

I had a typo in my reply. I mean by "putting y to x" that you make y equals x in the last statement for x'. I differentiate the x by getting the same x' which I get by plugging in the x for the statement x'. How can you show that x(t) = (et, -t) is a solution of the differential equation?

I get x' = (e^t, -1) by putting x to x' and x' = (1,-e^t) by putting y to x'. This gives me t = -t that is 1 = -1 which is false.

Homework Statement Show that the vectors \overline{x}(t) = \begin{bmatrix} e^t \\ -t \end{bmatrix} and \overline{y}(t) = \begin{bmatrix} t \\ e^(-t) \end{bmatrix} are solutions for \overline{x}' = \frac {1} {1+t^2} \begin{bmatrix} 1+t & e^t(1-t) \\ -e^-(t) (1+t) & t-1...

Homework Statement How can you convert 212 in base-10 to base-9? The Attempt at a Solution There are holes in the sequence of figures when considering 212 in base-9. There are 21 holes in the line. There also holes from 90 to 99 and from 190 to 199. There are then 40 (= 23+10+10-1) holes in...