Recent content by adffg

in a fish tank, CO2 + H2O-->H2CO3, i have dicided to titrate NaOH to the solution in order to determine the concentration of CO2, H2CO3(aq) + NaOH(aq)-> H+(aq) + H2O(l) If i know the pH of the solution, say pH=7.4, How can i determine the concentration of CO2 using titration?

There is a shiny surface on apply called cutin, why is this shiny surface useful in terms of the property of apple? How do they prevent excessive water lose and infection

11. Two towers of a radio station are 4.00 102 m apart along an east–west line. The towers act essentially as point sources, radiating in phase at a frequency of 1.00 106 Hz. Radio waves travel at 3.00 108 m/s. (a) In which directions is the intensity of the radio signal at a maximum for...

i have several few questions associate with adobe flash CS3 pro: 1)what is the use of symbol/library, cant we just copy and paste w/e we need? what is the adventure of symbol/library. 2)my flash version is CS3 professional, where can i find the script "stop ();". i mean when i click action...

in normal menu, when we click a button there are several more buttons expand out. how can i make that effect, ive already made those buttons. need help in the next stage. can anyone explain in detail plz, cause i am a beginner.