Radioisotopes can be used to understand chemical and biological processes in plants, because:

they are stable and can be detected easily using a geiger counter.

they are not harmful to the plants and animals they are used in.

they are used to trace the pathway of chemical reactions.

they are a natural byproduct of many biological processes.

Construct the hypothetical phase diagram for metals a and b between room temperature (20c) and 700c, given the following information: * the melting temperature of metal a is 480c. • the maximum solubility of b in a is 4 wt% b, which occurs at 420c. • the solubility of b in a at room temperature is 0 wt% b. • one eutectic occurs at 420c and 18 wt% b–82 wt% a. • a second eutectic occurs at 475c and 42 wt% b–58 wt% a. • the intermetallic compound ab exists at a composition of 30 wt% b–70 wt% a, and melts congruently at 525c.• the melting temperature of metal b is 600c. • the maximum solubility of a in b is 13 wt% a, which occurs at 475c. • the solubility of a in b at room temperature is 3 wt% a.

What does a numerical subscript following an element in a chemical formula mean?

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely