Tracy observes an organism that lives in a lake by her house. the organism has an internal skeleton, scales, fins, and gills. the organism that tracy observes is most likely a(n) a. amphibian b. fish c. mammal d. reptile

Which type of fossil does this image depict?

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .