An ecosystem now receives far less rain than it used to. the weather also became drier and hotter. over time, plants with structures that them to conserve water became more prevalent than plants that didn’t have those structures. from this information, we can conclude that the plants developed because of

Complete this brønsted-lowry reaction placing each product by its appropriate label. hso4- + hcn

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i.e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. the values of phosphorous acid are 1.30 6.70 calculate the ph for each of the given points in the titration of 50.0 ml of 1.5 m h3po3(aq) with 1.5 m koh(aq) .