Complete and balance the following formula equation for the reaction below. Write the complete ionic equation and the net ionic equation. All equations must be balanced and include phases (s, I. 8.or ag).

12.) A 2.00g sample of limestone was dissolved in hydrochloric acid and all the calcium present in the sample was converted to Ca²+, oxalate solution, (NH,),C,O(aqo), was added to the solution to precipitate the calcium ions as calcium oxalate, CaC,O4(s). The precipitate was filtered, dried and weighed to a constant mass of 2.43g. Determine the percentage by mass of calcium in the limestone sample. Excess ammonium (aq)•

Sodium hydroxide is extremely soluble in water. At a certain temperature, a saturated solution contains 565 g NaOH(s) per liter of solution. Calculate the molarity of this saturated NaOH(aq) solution.

1.Does a reaction occur when aqueous solutions of chromium(III) chloride and sodium hydroxide are combined? yes or no If a reaction does occur, write the net ionic equation. 2. write a balanced equation for the combination reaction described, using the smallest possible integer coefficients.When carbon (graphite) combines with oxygen , carbon dioxide is formed.

In addition to filling in the blanks below, show all of your work for this problem on paper for later upload. When 25.0 mL of 0.800 M Ca(NO3), is added to 75.0 mL of 0.600 M NaF, CaF2 precipitatės. Write the limiting reactant in the box below; write None if neither reactant limits. Determine the number of moles of calcium fluoride produced in this reaction and enter it into the box below. The initial temperature of both solutions is 25.00°C. What is the final temperature if the specific heat of the solution is 4.184 J/(g °C), and the density of the solution is 1.000 g/mL? The reaction and associated heat follows:

Subject: chemistry

Some chemical reactants are listed in the table below. Complete the table by filling in the oxidation state of the highlighted atom. oxidation state of highlighted atom 0 0 species FeSO4(s) VO(s) Fe₂O3(s) KMnO4(s) X 0 0

250 mL of a 1.9 M Mg(OH)2 solution is added to a beaker.  How many moles of Mg(OH)2 were added?  How many grams of Mg(OH)2 were added?

Complete the balanced molecular chemical equation for the reaction below. If no reaction occurs, write NR after the reaction arrow. Be sure to include the proper phases for all species within the reaction. CaBr2(aq)+AgNO3(aq) --->

Some chemical reactants are listed in the table below. Complete the table by filling in the oxidation state of the highlighted atom. oxidation state of highlighted atom species Na (aq) H30"(aq) co? (aq) Cl,(9)