13) What is the molar mass of a 0.726 g sample of gas that occupies 855 mL at 1 .20 atm and 18^circ C

What is the formula for the ionic compound? formula: $\square $

Calculate the solubility at $25^{\circ }C$ of $CaF_{2}$ in pure water and in a 0.0110M NaF solution. You'll find $K_{sp}$ data in the ALEKS Data tab. Round both of your answers to 2 significant digits. solubility in pure water: $\square \frac {g}{L}$ solubility in 0.0110 M NaF solution: $\square \frac {g}{L}$

Question 13 What is the formula for phosphoric acid? HBr

Balance this equation by typing the correct coefficients in the blanks. $\square C_{2}H_{5}OH+\square O_{2}\rightarrow \square CO_{2}+\square H_{2}O$

3. For the balanced equation shown below, if the reaction of 91.39 grams of $C_{3}H_{6}$ produces a $81.36\% $ yield, how many grams of $CO_{2}$ would be produced? $2C_{3}H_{6}+9O_{2}\Longrightarrow 6CO_{2}+6H_{2}O$

30 Consider the following reaction at $25^{\circ }C$ $3Ni(s)+N_{2}(g)+3H_{2}O(g)\rightarrow 3NiO(s)+2NH_{3}(g)$

An atomic cation with a charge of $+3$ has the following electron configuration: $[He]2s^{2}2p^{6}$ What is the chemical symbol for the ion? How many electrons does the ion have? How many 2s electrons are in the ion? $\square $ $\square $ $\square $

Identify the spectator ions for the reaction between calcium nitrate and sodium sulfate.The balanced molecular equation is $Ca(NO_{3})_{2}(aq)+Na_{2}SO_{4}(aq)\rightarrow CaSO_{4}(s)+2NaNO_{3}(aq)$ $Na^{+}$ and $NO_{3}^{-}$ $Ca^{2+}$ and $NO_{3}^{-}$ $Na^{+}$ and $SO_{4}^{2-}$ $Ca^{2+}$ and $SO_{4}^{2-}$

Drag each tile to the correct location on the table. Classify the properties based on whether they describe metals or nonmetals. \begin{array}{|c|c|c|} \hline\ \begin{array}{l}\ They\ are\ good\ conductors\ \\ of\ heat\ and\ electricity. \end{array} & \begin{array}{l}\ They\ are\ brittle\ and\ \\ break\ into\ sharp\ pieces. \end{array} & \begin{array}{l}\ They\ are\ flexible\ and\ can\ \\ be\ made\ into\ wires. \end{array} \\ \hline \begin{array}{l}\ They\ are\ mostly\ solids\ \\ at\ room\ temperature. \end{array} & \begin{array}{l}\ They\ are\ poor\ conductors\ \\ of\ heat\ and\ electricity. \end{array} & \begin{array}{l}\ They\ are\ solids,\ liquids,\ or\ \\ gases\ at\ room\ temperature. \end{array} \\ \hline \end{array} \begin{array}{|l|l|} \hline\ Metals\ &\ Nonmetals\ \\ \hline\ &\ \\ &\ \\ &\ \\ \hline \end{array}

Use the References to access important values if needed for this question. The molar solubility of chromium(III)hydroxide in a water solution is $\square $ M.