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Problem- A 5.00 gram sample of iron was dissolved in acid to produce a solution containing Fe2+. The solution was then titrated under acidic conditions to the end point with 45.45 mL of 0.3200 M KMnO4. (The MnO4 was converted to Mn2+). A. Derive the balanced titration equation. B. Calculate how many grams of Fe were in the original iron wire sample?
calculate the concentration of Hg2 +2 in a saturated aqueous solution of (Hg2)3[Co(CN)6]2 which dissociates into mercurous ion and Co(CN)6 -3 (cobalticyanide).
The instruction booklet for your pressure cooker indicates that its highest setting is 13.4 . You know that standard atmospheric pressure is 14.7 , so the booklet must mean 13.4 above atmospheric pressure
How many liters of hydrogen gas are formed from the complete reaction of 1.06mol of C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and temperature of 325K? Using C(s)+H2O(g)=CO(g)+H2(g)
What volume of a 0.110 M NH4I solution is required to react with 923 mL of a 0.480 M Pb(NO3)2 solution? b. How many moles of PbI2 are formed from this reaction?
Assume it took the entire allotted time. If we used anisole instead of methyl benzoate to run an analogous reaction, how much time would a similar nitration reaction take.
a family heats their house with propane gas. the gas company reports that for an average home it takes 26.970 kj of
How many grams of potassium chlorate decompose to potassium chloride and 527 mL of O2 at 128 degrees C and 752 torr?
Chlorine has an average atomic mass of 35.453 amu. The main isotopes of chlorine are 35Cl which has an atomic mass of 34.968 amu and 37Cl, which has an atomic mass of 36.956amu. Given this, what is the percent abundance of each isotope in natural ..
You are using a Geiger counter to measure the activity of a radioactive substance over the course of several minutes. If the reading of 400. counts has diminished to 100. counts after 35.2 minutes, what is the half-life of this substance
skiers and group engaged in outdoor activities in a frosty climate can access portable hot packs. mixture of powdered
a solution of ammonia and water contains 1.40times1025 water molecules and 5.30times1024 ammonia molecules. how many
An empty flask's mass is 17.4916g, its mass is 43.9616g when filled with water at 20.0c (d=0.9982g/ml). The density of "heavey water" at 20c is 1.1053g/ml. What is the mass of the flask when filled with heavy water at 20.0c
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