A 11.75 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis and 20.95 grams of Co, and 3.578 grams of H20 are produced.

In a separate experiment, the molecular weight is found to be 74.08 amu. Determine the empirical formula and the molecular formula
of the organic compound.

Enter the elements in the order C, H, O
empirical formula =
molecular formula =

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.

Aseismic wave is energy released as the result of rock movement along a fault. t or f ?