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Mineral pyrolusite MnO2, Manganese Oxide is a compound of manganese-55 and oxygen-16. determine the empirical formula of pyrolusite If 63% of the mass of pyrolusite is due to manganese,?
if potassium bromide of 25.5 grams is dissolved in enough H2O to make 1750 mL of solution, determine the molarity of the solution?
a solution is prepared by dissolving 23.7g of CaCl2 in 375g of water. The density of the resulting solution is 1.05g/mL.
A 100.0 g sample of aluminum released 1680 calories when cooled from 100.0C to 20.0C. What is the specific heat of the metal
What is the change in pH when 0.005 moles of HCl is added to 0.100 L of a buffer solution that is 0.100 M in CH3CO2H and 0.100 M NaCH3CO2? The Ka for acetic acid is 1.8 x 10 -5.
Consider a saturated solution of calcium fluoride in 0.075 M potassium nitrate. Complete the following tasks, and then answer the question. (Note: Your textbook may not employ the terms Kspo and Ksp'. Please refer to the lecture notes.)
Nitrosyl bromide, NOBr, is formed in the reaction of nitric oxide, NO, with bromine,Br2 : 2NO(g)+Br(g) 2NOBr(g) The reaction rapidly establishes equilibrium when the reactants are mixed
C3h8+5o2=3co2+4h2o How Many Moles Of Oxygen Are Necessary To React Completely With Four Moles Of Propane?
Suggest a reason why the equilibrium between succinic acid and acetic anhydride lies on the side favoring formation
The pressure in the stages is such that 8% by mass of the water entering the stage evaporates and leaves as fresh water. If the desalination plant wants to produce 1400.0 gallons of drinking water per day, how many gallons of brine must the plant ..
The burning of ethane produces both CO2 and H2O. If 200 mL of CO2 is produced at 20°C and 750 torr, what volume of water vapor would be produced at 24°C and 790 torr?
Given the following Delta H°298 values in kcal/mol , where "gr" stands for graphite, find Delta f H°298 of Fe(s) and Fe2O3(s) Fe2O3(s) + 3C (gr) --> 2Fe(s) + 3CO(g) 117 FeO(s) + C(gr) --> Fe(s) +CO(g) 37 2CO(g) + O2(g) --> 2CO2(g) -135 C(gr) + O2(..
Write the expressions for Kc for the following reactions. a. 2O3(g) --> 3O2(g) b. Ti(s) + 2Cl2(g) --> TiCl4(l) c. 2C2H4(g) + 2H2(g) --> 2C2H6(g) + O2(g)
How will buffer capacity change if you add 0.2 M of benzoic acid to the buffer made of 0.3 M of acetic acid
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