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What is the pH of the lye (NaOH) in oven cleaner in which there are 1 x 10-10 moles/Liter of H+
Only the Fe2O3 present in the ore reacts with the carbon producing 341. g of carbon monoxide by the following reaction. What is the mass percentage of Fe2O3 in the impure iron ore sample?
If someone using one of those masks exhales 0.696 g of CO2/min, how many grams of potassium superoxide would be consumed in 10.00 minutes?
Predict the products of the reaction of phenylacetaldehyde, C6H5CH2CHO with the following reagents:
When 3.8 L of propane gas is completely combusted to form water vapor and carbon dioxide at 350°C and 0.936 atm, what mass of water vapor results?
Thus it produces four fatty acids, two phosphates and three glycerols upon hydrolysis. Which of the following is true about its localization in the membrane?
when a current of 0.156A is passed through a solution of lead(II) nitrate, lead is deposited at the cathode. How long will it take to deposit 0.10g of lead?
What is the molality of a solution that contains 0.850g of ammoni NH3 in 125g of water?
Calculate the boiling point of a solution of 500.0 g of ethylene glycol (C2H6O2) dissolved in 500.0 g of water. Kf = 1.86°C/m and Kb = 0.512°C/m. Use 100°C as the boiling point of water.
What is the specific heat capacity of a metal that has capacity of a metal that has a mass of 25.00 grams and absorbs 1000.0 j of heat in cooling from 80.0 c to 40.0 c?
What would the concentration of Br- and C5H5NH+ ion be if 0.15M of solid C5H5NHBr were dissolved in 1L of solution? Is pyridinium bromide an acidic or basic salt? Write a chemical equation as proof
What is the debroglie wavelength of a .500kg object moving at 20.00 m/sec
What is the molarity of each of the following solutions? You pipet 20.00 mL of 0.0600 M CuCl2 into a 100.00 mL volumetric flask and fill to the mark.
You have successfully purified a protein to homogeneity. From gel permeation chromatography studies, you determine that the protein has a molecular weight for 235,000 daltons.
Define molality. How many grams of na2co3 should be dissolved in 250grams of water to prepare 0.1?
Assume that the pressure and the temperature remain constant. What is the new volume of gas in liters when a leak allows one-half of the neon atoms to escape?
Analysis shows that there are 2.05 moles of H2, 8.98e-05 moles of S2, and 7.7 moles of H2S present in a 56.2 L flask at equilibrium. Calculate the equilibrium constant Kc for the reaction
A chemist wants to make 5.1 L of a 0.291 M CaCl2 solution. What mass of CaCl2 (in g) should the chemist use ?
What are the missing coefficients for the skeleton equation below?
A bag of potato chips contains 580 mL of air at 25°C and a pressure of 755 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain where the pressure is 446 mm H
Compare the amount of .200 moles of KOH needed to neutralize 50 mL of .200 moles of HNO3 with the amount of .200 moles of KOH needed to neutralize 50 mL.
Consider the sodium sulfate/sodium bisulfate (Na2SO4/NaHSO4) buffeer system where Ka=1.1*10-2 for HSO4-. How Many grams of wach of these salts should you add to 1L of water in order to make the buf
A mixture of 0.1079 M CO (g) and 0.1079 M H2O(g) was allowed to react and come to equilibrium at some temperature. If Kc = 5.668, what is the equilibrium molar concentration of H2 for the reaction?
A 30.5-g sample of an alloy at 93.0°C is placed into 50.0 g of water at 22.0°C in an insulated coffee cup with a heat capacity of 9.2 J/K. If the final temperature of the system is 31.1°
A calorimeter contains 18.0 mL of water at 12.0, ^{circ}C. Calculate the enthalpy change, Delta H, for this reaction per mole of rm X