Given that the nucleus of 18 8O 818O is formed by 8 protons and 10 neutrons, is the mass of a neutral atom of 18 8O 818O equal to the sum of the masses of 8 atoms of 11H11H and 10 neutrons? Recall that the mass of a proton is mp=1.007276ump=1.007276u and the mass of a neutron is mn=1.008665umn=1.008665u. The mass of a neutral atom of 11H11H is mH=1.007825umH=1.007825u. View Available Hint(s)

Which of the following is an example of a parasite?

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.

If the atomic mass of an atom is 34 and the atom contains 13 protons, how many neutrons does the atom contain?