Write equation to represent dissociation of sodium sulfate
Write an equation to represent the dissociation of Na2SO4 into ions in an aqueous solution. 5.3 grams of Na2SO4 are dissolved and diluted up to 350 ml. What is the final concentration of Na in moles/liter?
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Identify all of the spectator ions in the precipitation reaction below. Ca^2+ (aq) + 2Br^-(aq) + 2Li^+ (aq) + CO3^2- (aq) arrow to CaCO3 (s) + 2Li^+ (aq) + 2Br^- (aq)
How do you find the net ionic equation for Hg2Cl2(s) + 2NH3(aq) --> Hg(l) + HgNH2Cl(s) + NH4+(aq) + Cl-(aq)
The initial DO of the mix is 9.0 mg/L. After 5 days, the DO is 4.0 mg/L. After a long period of time, the DO is 2.0 mg/L, and it no longer seems to be dropping. Assume nitrification has been inhibited so the only BOD being measured is carbonaceous
An acid with a Ka of 1 x 10-8 is titrated with NaOH, both solutions being 0.020 M. What should the Ka of the indicator be, in order to obtain the best end point
Does this reaction occur at the anode or the cathode? Explain your answer. Explain what will happen to Zn over time.
A 27.3 g sample of pure iron at 81 C is dropped into 56 g of water at 40 C. What is the final temperature of the water-iron mixture?
A 5.05g sample of a copper substance was heated in air and 6.32g of copper II oxide was formed. what was the formula of the orginal copper substance?
Not enough sodium hydroxide was added, so the solution was still acidic when the beaker was heated to convert the copper(II) hydroxide to copper(II) oxide.
A solution is made by mixing 0.5 L of 1.0 molarity KBr and 0.5 L of 1.0 Molarity K3PO4. What is the concentration of each ion in the solution
Calculate the concentration of hydronium ions [H3O+] from the measured pH values. Express the answerin two significant figures. Please show how you got the answer.
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