For the equation below, if you want 35 mL of H2S2 (1.334 g/mL), what mass of 2.4 % LiCN solution will you make? 2 HCN + 2 Li2S -> 4 LiCN + H2S2 Please note: If you examine the equation carefully, you will see that it is not balanced correctly (and in fact cannot be balanced). Nevertheless, do NOT correct the coefficients or the chemical substances. Use the equation as it has been given to you. 223 g 969 g 3878 g 7782 g

Predict the products then write the balanced molecular and total ionic equations for the reaction that occurs when the aqueous contents of the two beakers below are added together. Sodium (Na") ions are gray. Co2+ CI ONa* OH cobalt(II) chloride sodium hydroxide + -------> { NOTE: For the equations below i) Put answers in the spaces to balance the equations. ii) Do NOT use subscripts or superscripts in formula answers. Put parentheses around any polyatomic species only if there is more than one of it in the formula. Put numbers on same level as symbols (e.g.s, the ion "NO3"should be written as (NO3)-1 or (NO3)1-; Na2cO3 should be written as Na2CO3 & Ca(NO3)2 as Ca(NO3)2.) iii) Input all numerical coefficients even if it is the number "1". } (i) Molecular equation: (aq) + (aq) (s) + (aq) ---> (Place #s or coefficients and formulas in the spaces) (ii) Total ionic equation: 1 Co2*(aq) + (aq) + (aq) + (ag) ---> (s) + (aq) + (aq) (Place #s or coefficients and formulas in the spaces)

Look at the following incomplete reactions occurring in aqueous solutions. Perchloric acid + cesium hydroxide ⟶                      + water Ammonium phosphate +   ⟶ copper(II) phosphate + ammonium nitrate Write the name of the missing compound in each reaction above. Write the balanced molecular equation (with the abbreviations of the physical state), complete ionic equation, and net ionic equation for each reaction above. List the spectator ions in each reaction above. Which one is a precipitation reaction?

In the laboratory you are given the task of separating Ba²+ and Fe²+ ions in aqueous solution. For each reagent listed below indicate if it can be used to separate the ions. Type "Y" for yes or "N" for no. If the reagent CAN be used to separate the ions, give the formula of the precipitate. If it cannot, type "No" Y or N Reagent Formula of Precipitate if YES 1. HBr 2. 3. K₂SO4 K₂CO3

You have 250. mL of 0.125 M HCl. Using a volumetric pipet, you take 50.00 mL of that solution and dilute it to 100.00 mL in a volumetric flask. Now you take 5.00 mL of that solution, using a volumetric pipet, and dilute it to 100.00 mL in a volumetric flask. What is the concentration of hydrochloric acid in the final solution? Concentration = M

You have 250. mL of 0.125 M HCl. Using a volumetric pipet, you take 50.00 mL of that solution and dilute it to 100.00 mL in a volumetric flask. Now you take 5.00 mL of that solution, using a volumetric pipet, and dilute it to 100.00 mL in a volumetric flask. What is the concentration of hydrochloric acid in the final solution? Concentration = M

Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a precipitate will form, enter its empirical formula in the last column. Does a precipitate form when A and B empirical formula of precipitate solution A solution B are mixed? sodium hydroxide copper(II) bromide O yes O no sodium chloride ammonium bromide O yes O no ammonium sulfide zinc bromide O yes O no

Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a precipitate will form, enter its empirical formula in the last column. Does a precipitate form when A and B empirical formula of solution A solution B precipitate are mixed? zinc nitrate sodium hydroxide yes no iron(II) bromide zinc acetate yes no iron(II) chloride ammonium sulfide yes no Acces Check O 2021 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center Explanation MacBook Pro

Complete the table below by deciding whether a precipitate forms when aqueous solutions A and B are mixed. If a precipitate will form, enter its empirical formula in the last column. Does a empirical formula of precipitate form when A and B are mixed? solution A solution B precipitate manganese(II) bromide zinc nitrate O yes O no sodium sulfide O yes copper(II) sulfate no sodium hydroxide zinc nitrate O yes O no

Select all of the ions that are spectator ions in the below chemical reaction. Incorrect selections will deduct credit. 3 MgBr2 (aq) + 2 NazPO4 (aq) → Mg3(PO4)2 (s) + 6 NaBr (aq) Na+ PO,3- Br Mg2+ O There are no spectator ions.