$1.$For the following $Cu-Ag$ phase diagram

a$.$ label all single, and two$-$phase regions.

b$.$ Eutectic reaction $($indicate the composition and temperature$)$

$2.$ Use the binary, isomorphous, molybdenum$-$vanadium phase diagram for Problems $1-3.$ Note: the dashed curve in the phase diagram indicates that there is some error or uncertainty in the location of the liquidus line; the uncertainty in the liquidus line should not affect your calculations.

For a $50wt\%$ vanadium alloy at $2200C,$ determine the following:

a$.$ Phases present

b$.$ Compositions of the phases