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Explain how many grams of which reactant remains after the reaction of 15.0 g of MnO2 (86.9 g/mol) as well as 30.0 g of HCL (FW = 36.5 g/mol) according to the subsequent chemical equation?
MnO2(s) + 4 HCl(aq) ¡ Cl2(g) + MnCl2(aq) + 2 H2O(l)
a piece of als at 94degc is placed in 65g of h2o at 28degc. the aluminum cools and after equilibrium the final
A gas bottle contains .650 mol of gas at .961 atm pressure. If the final pressure is 1.15 atm, how many moles of gas were added to the bottle.
Radioactive carbon-14 has a half life of 5730 years. Suppouse a peice of wood has a decay rate of 15 disingrations per minute. How many years would it taker for the rate of decrease to 4 disintegrations per minute
The balences in the lab can weigh a maximum of 220.000 g at once. if a beaker has a mass of 86.4329 g, what is the maximum volum of water
A 50.00mL solution of 0.100M Cd2+ is titrated with 0.100M EDTA buffered at a pH of 7.2. What is the Cd2+ concentration at the equivalence point. Kf CdY2-= 2.9e16, Ka1 EDTA= 1.02e-2, Ka2 EDTA= 2.14e-3, Ka3 EDTA= 6.92e-7, Ka4 EDTA= 5.5e-11
How many moles of ammonia are produced when 20 moles of hydrogen react with 40 moles of nitrogen
describe in a 150 word essay in any writting style the adverse effects caused by exposure to radiation. include some
How many grams of sodium formate, NaCHO2, would have to be dissolved in 1.4 L of 0.42 M formic acid (pKa 3.74) to make the solution a buffer for pH 3.64
Solid aluminum acetate is slowly added to 75.0 mL of a 0.0536 M sodium phosphate solution. The concentration of aluminum ion required to just initiate precipitation is
An 11.2 liter flask at 0 degrees C contains one mole of oxygen, two moles of nitrogen and three moles of helium. What is the pressure in the flask
Define what is the limiting reactant. Define what mass of the other reactant is in excess
where can be (green), (brown), or (purple). Examine the three figures below representing equilibrium concentrations in this reaction at the same temperature for the three different halogens. Rank the equilibrium constants for these three reactions..
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