Select the single best answer. compound a exhibits two singlets in its 1h nmr spectrum at 2.64 and 3.69 ppm and the ratio of the absorbing signals is 2: 3. compound b exhibits two singlets in its 1h nmr spectrum at 2.09 and 4.27 ppm and the ratio of the absorbing signals is 3: 2. which compound corresponds to dimethyl succinate and which compound corresponds to ethylene diacetate? 1455a 1455b dimethyl succinate ethylene diacetate?

Using data from seismic waves, geologists have learned that earth’s interior is made up of several

How do cfcs cause ozone depletion? how do cfcs cause ozone depletion? ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule.

6) (a) calculate the absorbance of the solution if its concentration is 0.0278 m and its molar extinction coefficient is 35.9 l/(mol cm). the depth of the cell is 5 mm. (b) what is the %t? (7) calculate the absorbance of the solution if the transmitted light intensity is 70% of the initial light beam intensity