hi i got i 20 from sacred heart university u.s.a.i got good tofel score and my gre is score is very poor.my university requirement is only tofel.i completed my b.pharmacy in 2009 so i got 1 year gap is their chances to reject visa?what i have to do i was very tensed.how to sought out my problem
1885Acid value defination is numbber milligrams of KOH required to nuetralise the acid present in one gram oil & fats but why not use NaOH for nuetralisation?
5 10134When a glass rod is heated gradually and suddenly dipped in cold water, it cracks. What is the reason????????? When a cool glass rod is suudenly heatd, it cracks. Why?????????
3 6574What is the molarity of a NaOH solution if 32.47ml. isrequired to titrate 0.6013g of potassium hydrogen phthalate?
2 8769is urea addition affecting the COD (chemical oxygen demand) & BOD (Biological oxygen demand)level? why?
3 10318What is positive testing in relation to chemistry? For example, the sentence reads "Sample solutions are solutions known to contain one of each of the following ions, silver ion, Ag+(aq), barium ion, Ba2+(aq), and iron (III) ion, Fe3+(aq). Testing solutions are the solutions containing a polyatomic ion that can react with one of the metal ions to give a positive test." I am then asked to define what a "positive test" is. I am currently a student who is pretty new to chemistry, please try and make your answer as simply as possible. Thanks for the help.
UST,
2 13782Post New General Chemistry Questions
What is pka of acid?
Why is ammonium hydroxide added to the brass solution?
Which is the indicator used in the determination of cao I cement solution?
what are the role of chemistry education in sustainable development
why is their exotherm while addition of reducing agents in reduction reaction?
Explain extraction of ephedrine from a mineral block?
What is kentchin?
Arrange by acidic values : phenol, nitrotolouene and o-cresol?
Cholesterol is a compound suspected of causing hardening of the arteries. The formula of cholesterol is C27H46O. a. A sample of cholesterol is isolated from the arterial lining of a 60-year-old American male. What is the formula of this compound? b. Cholesterol is extracted from a chicken’s egg. What is the formula of this compound?
Why is ammonia-ammonium chloride buffer added?
How is the accuracy of the method determined?
Define what is avogadro’s law?
Define Vulcanization?
What is wave length?
What is the difference between volumetric solutions and test solutions
