acid (EDTA) is a. known to form unstable complex ions with Fe3+, Hg2+, and Zn2+.
b. a monodentate ligand.
c. an effective antidote for heavy metal poisoning (e. g., Pb2 and Hg2 ).
d. not useful as a chelating agent.
e. known to form complexes with platinum that inhibit the growth of cancerous cells.

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore

Which type of fossil does this image depict?