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Iron ore can be treated with HCl and various reagents to convert the iron to Fe2+, which can then be assayed by titration with permanganate.
Fe2+ + MnO4- ? Fe3+ + Mn2+
A 4.855-g sample of ore was processed into 500.0 mL of acidic solution, and a 100.0-mL aliquot of this solution required 19.74 mL of 0.1058 M KMnO4 to reach the titration endpoint. What was the mass percent of iron in the ore sample?
understanding of chemistry basics.1. boltzmanns critics claimed his work was unscientific because he.a. presented his
What is the molar mass of a compound if one mole of the compound contains two moles of oxygen atoms, 6.022 x 10^24 hydrogen atoms, and 60.05 grams of carbon?
If the total pressure in the cylinder is 2490 mmHg, what is the partial pressure of each of the components? Assume constant temperature.
Aluminum metal dissolved in hydrochloric acid as follows: 2Al(s) + 6HCl(aq) → 2AlCl3(aq) + 3H2(g)
A compound contains 10.13% C, and 89.87% Cl (by mass). Determine both the empirical formula and the molecular formula of the compound given that the molar mass is 236g/mol
Given the equilibrium constants below: (1/2) N2(g) + (1/2) O2(g) NO(g) Kc= 4.8*10^(-10) 2 NO2(g) 2 NO(g) + O2(g) Kc= 1.1*10^(-5) What is the equilibrium constant for: 2 NO2(g) N2(g) + 2 O2(g) Kc=?
There are four peaks in the H nmr but they do not match the calculated ppm values. Which hydrogens would match the peaks for m-trifluoromethyl benzoic acid
A flask containing 5.00ml of 3M HCI solution requires 14.45 mL of 1.00M NaOH for titration. How many moles of HCI are present in the solution. The density of 3M HCI is1.05 g/mL
How to calculate the pH of 0.375 L of a 0.18 M acetic acid-0.29 M sodium acetate buffer before and after the addition of (a) 0.0060 mol of KOH and (b) 0.0060 mol of HBr.
How many grams of NaCN would you need to dissolve in enough water to make exactly 325 mL of solution with a pH of 10.00
Calculate the volume of fluid a patient would need to receive to lower their blood glucose concentration back to normal range. Assume the body has no other way to lower blood glucose concentration.
Starting with 2 different samples of propyne, show how you can make 2-methyl-pent-3-yn-2-ol (condensed formula (CH3)2C(OH)C=CCH3 ). In other words, you can convert propyne into a nucleophile, and convert propyne into an electrophile, and react the..
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