Fitting coefficients for $C_p = a + bT + \frac{c}{T^2}$ in $\frac{J}{mol K}$

	$a$	$bx10^3$	$cx10^{-5}$
$Ag(s)$	21.3	8.54	1.51
$BaO(s)$	53.3	4.35	-8.3
$Fe(\alpha)$	37.12	6.17	0
$O_2(g)$	29.96	4.18	-1.67

$1$. Determine the change in enthalpy when the temperature of $21$ moles of substance $Ag(s)$ is changed from $566 K$ to $553 K$. Your final answer must include units.

$\Delta H = H(553)-H(566)=$

$\displaystyle\int$

$dT$

$\hskip 108pt=$

$\Bigg\vert$

$\hskip 108pt=$

Units

$2$. Determine the change in enthalpy when the temperature of $78$ moles of substance $BaO(s)$ is changed from $1247 K$ to $1406 K$. Your final answer must include units.

$\Delta H = H(1406)-H(1247)=$

$\displaystyle\int$

$dT$

$\hskip 108pt=$

$\Bigg\vert$

$\hskip 108pt=$

Units

$3$. Determine the change in enthalpy when the temperature of $22$ moles of substance $Fe(\alpha)$ is changed from $616 K$ to $727 K$. Your final answer must include units.

$\Delta H = H(727)-H(616)=$

$\displaystyle\int$

$dT$

$\hskip 108pt=$

$\Bigg\vert$

$\hskip 108pt=$

Units

$4$. Determine the change in enthalpy when the temperature of $58$ moles of substance $O_2(g)$ is changed from $842 K$ to $2287 K$. Your final answer must include units.

$\Delta H = H(2287)-H(842)=$

$\displaystyle\int$

$dT$

$\hskip 108pt=$

$\Bigg\vert$

$\hskip 108pt=$

Units