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You have a stock 0.100 M solution of KMnO4 and a series of 100-mL volumetric flasks. What volumes of the stock solution will you have to pipet into the flasks to prepare standards of 1.00, 2.00, 5.00, and 10.0x10^-3M KMnO4 solutions?
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Calculate the number of moles of barium chloride in 427g of a 3.17% by mass barium chloride solution?
A power plant converts the heat energy in coal to electricity with 35% efficiency. Transmission losses are 10%. A factory then uses that electricity to make hydrogen with 50% efficiency, which is used in a fuel cell to m ...
1. Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has the unwieldy formula of KHC 8 H 4 O 4 . This is often written in shorthand notation as KHP. If ...
How many moles of magnesium ion are present in 5.25g Mg 3 (PO 4 ) 2 ?
Interpretation of Reactions by Ionic Type Equations. Aqueous solutions of the following substances or their mixtures with water if they are only slightly soluble, are mixed. Write first the conventional equation , secon ...
You have 5 mL of HCl acid (unknown concentration) in a 50 mLvolumetric flask, and bring it up to volume with deionizedwater. Calculate the molarity of the HCl by using the pH equation(pH = -log[H3O+]) , and the dilution ...
Titrate the base trimethylamine (TMA) with 0.126 M HCl. (CH) 3 N(aq) + H 2 O(l) (CH 3 ) 3 NH+(aq) + OH-(aq) Kb = 6.45 x 10 -5 There are 0.00615 moles of TMA in 42.5 mL H 2 O before titration begins. What percent of TMA i ...
For each of the following reactions identify the oxidizing agent and the reducing agent. 2Na(aq)+2H2O(l)→2NaOH(aq)+H2(g) C(s)+O2(g)→CO2(g) 2MnO-4(aq)+5SO2(g)+2H2O(l)→2Mn2+(aq)+5SO2-4(aq)+4H+(aq)
What is the molarity of a solution made by dissolving 20.0 g of CrCl2 in 0.150 L of solution?
1.00 mole of sodium carbonate (formula mass 106.0) is converted to sodium chloride, Na2CO3(s) + 2HCl(aq)® 2NaCl(aq) + H2O +CO2(g). The percentage yield in this conversion is 80%.Which of the following is correct: a. 0.80 ...
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