Chapter 9.20, Problem 17QP

(a)

To determine

The relative amounts of phases for the alloys:

15wt%Sn-85wt%Pb at $\text{100°C}\left(212\text{°F}\right)$ $\text{100°C}\left(212\text{°F}\right)$

(b)

To determine

The relative amounts of phases for the alloys:

25wt%Pb-75wt%Mg at $\text{425°C}\left(800\text{°F}\right)$

(c)

To determine

The relative amounts of phases for the alloys:

85wt%Ag-15wt%Cu at $\text{800°C}\left(1470\text{°F}\right)$

(d)

To determine

The relative amounts of phases for the alloys:

55wt%Zn-45wt%Cu at $\text{600°C}\left(1110\text{°F}\right)$

(e)

To determine

The relative amounts of phases for the alloys:

$\text{1}\text{.25 kg Sn}$ and $\text{14}\text{kg}\text{Pb}$ at $\text{200°C}\left(390\text{°F}\right)$

(f)

To determine

The relative amounts of phases for the alloys:

$\text{7}\text{.6}{\text{lb}}_{\text{m}}\text{Cu}$ and $\text{144}\text{.4}{\text{lb}}_{\text{m}}\text{Zn}$ at $\text{600°C}\left(1110\text{°F}\right)$

(g)

To determine

The relative amounts of phases for the alloys:

$\text{21}\text{.7}\text{mol}\text{Mg}$ and $\text{35}\text{.4}\text{mol}\text{Pb}$ at $\text{350°C}\left(660\text{°F}\right)$

(h)

To determine

The relative amounts of phases for the alloys:

$\text{4}\text{.2}\text{mol}\text{Cu}$ and $\text{1}\text{.1}\text{mol}\text{Ag}$ at $\text{900°C}\left(1650\text{°F}\right)$