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Explain a chloride solution prepared by dissolving 0.2789 g of an unknown sample in 250.00mL as well as taking a 10-mL aliquot of the resulting solution, needs 11.21mL of the same silver nitrate solution to reach the end point
Determining Copper in Brass, 1st I titrated Na2S2O3 and determined the molarity to be 0.164. I am having trouble with the calculations for the dissolution of brass.
Calculate the rate constant of a first order reaction having a half life of 7.19 x 10-5 seconds. Enter your answer to 3 sig figs. Determine the bimolecular (second order) rate constant of a reaction if the initial reagent concentration decreases f..
Which of the following hormones requires selenium for its synthesis?
The valence electrons of group 5A elemnts are in the 6s subshell. 8. The highest principle quantum number of period 2 elements is 2.
when 24.0g of glucose a nonelectrolyte are dissolved in 500.g of water the solution has a freezing point of
Copper metal and zinc metal react differently in the presence of certain acids. For example, while both react with concentrated nitric acid and dissolve completely, only zinc reacts and dissolves in dilute hydrochloric acid.
magnesium sulphate MgSO4 has an observed osmotic pressure =7.6 atm at the temperature of twenty five degree celsius. Determine the observed van't Hoff factor?
When adding the solution of HNO3 from the buret in Step 14 to beaker 4, you know that you added 2.5 mL instead of 1.5 mL for a total volume of 11.0 mL. How would the calculated value of the equilibrium constant be affected for this sample?
The rainwater is mainly composed of NaCl 1 mM and its pH is 4.6. Without using a computer, determine the concentration of Ca2+in runoff water.
potassium hydrogen phthalate, a monoprotic acid with a molecular weight of 132 g/mol
Consider the following chemical equations: A) Fe2O3(l) + Al(l) ---> Fe(l) + Al2O3(s) If 25.0 g of molten iron(III) oxide reacts with 475 g of aluminum, what is the mass of the iron produced. B) Al(OH)3(s) + H2SO4(l) ---> Al2(SO4)3(aq) + H2O(l) If ..
Write the balanced reaction for the complete combustion f octane (C8H18) and then determine how many moles of oxygen it would require to burn 240.00 moles of octane? 2 350.00 grams of octane?
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