Which of the following statements regarding outgoing longwave flux values is correct?

it is approximately 300 w/m² for antarctica in june.
it is approximately 300 w/m² for the sahara in december.
it is approximately 300 w/m² for the amazon rain forest in december.
it is approximately 300 w/m² for greenland in december.
it is approximately 300 w/m² for the sahara in june.

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.

The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy