QUESTION $1$

If $0\mathrm{.}424$ moles of potassium chloride are dissolved in $111\mathrm{.}2g$ of water, what is the molality of the solution $($in m$)?$ Give your answer to three sig figs. Do not include units in your answer

QUESTION $2$

If $28\mathrm{.}1g$ of $MgC{l}_2$ are dissolved in $80\mathrm{.}1g$ of water what is the mole fraction of water in the solution? Give your answer to three sig figs. Do not include units in your answer

QUESTION $3$

If $20\mathrm{.}0g$ of $MgC{l}_2$ are dissolved in $96\mathrm{.}5g$ of water what is the mole fraction of $MgC{l}_2$ in the solution? Give your answer to three sig figs. Do not include units in your answer

QUESTION $4$

How many moles of $C{l}^{-}$ions $($in mol$)$ are present in $286\mathrm{.}0ml$ of $1\mathrm{.}13MAlC{l}_3.$ Give your answer to three sig figs. $($Do not include units in your answer$)$

QUESTION $5$

How many moles of $A{l}^{3+}$ ions $($in mol$)$ are present in $246\mathrm{.}3ml$ of $1\mathrm{.}63MAlC{l}_3.$ Give your answer to three sig figs. $($Do not include units in your answer$)$

QUESTION $6$

Nitrogen and oxygen are mixed in a $2\mathrm{.}00L$ contannet at $373K.$ If the partial pressure of nitrogen is $3\mathrm{.}82$ atm and the partial pressure of oxygen is $3\mathrm{.}30$atm, what is the mole fraction of oxygen in the container? $($give your answer to $3$ sig figs. Do not include units$)$

QUESTION $7$

A glass vessel with a volume of $32\mathrm{.}1L$ contains $3\mathrm{.}22$mol of helium and $4\mathrm{.}24$mol of chlorine at $298K.$ Determine the partial pressure of helium in the vessel $($in atm$)($give your answer to $3$ sig figs. Do not include units$)$

QUESTION $8$

A glass vessel with a volume of $32\mathrm{.}1L$ contains $2\mathrm{.}24$mol of helium and $5\mathrm{.}00$mol of chlorine at $298K.$ Determine the total pressure in the vessel $($in atm$)($give your answer to $3$ sig figs. Do not include units$)$

QUESTION $9$

Nitrogen and oxygen are mixed in a $2\mathrm{.}00L$ container at $3\mathrm{.}3K.$ If the partial pressure of nitrogen is $4\mathrm{.}95$ atm and the partial pressure of oxygen is $4\mathrm{.}12$atm, what is the total pressure $($in atm$)?($give your answer to $3$ sig figs. Do not include units$)$