$4.)$ The molar volume $A_2{O}_{3}25C$

Tane

and $1$atm is $25715c\frac{c}{m}ol.$ Its co$-$ da effrcient of thermal exp. is $26{10}^{-6}{k}^{-1}$ the coef. of compressibility

Ch$.6$

is $8\mathrm{.}0{10}^{-7}at{m}^{-1}.$ Fstimate the molor volume of $A{l}_2{O}_{3}400C10$ kbors pressure.

$($:$V=V(T,P)=V_0(1+(T-T_0))-k(P-P_0)\}$

molor of $A_2{O}_3$ stonderd coeff.