Aflask containing neon gas is connected to an open-endedmercury manometer. the open end is exposed to the atmosphere, wherethe prevailing pressure is 745 torr. the mercury level in the openarm is 50 mm below that in the arm connected to the flask of neon. what is the neon pressure, in torr?

a. -50 torr

b. 50 torr

c. 695 torr

d. 795 torr

e. none of these choices is correct.

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 wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

What is the subscript for oxygen in its molecular formula