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A 35.0 mL solution of 0.095 M CaCl2 is mixed with 25.0 mL of 0.0012 M BaCl2 if KF is slowly added which flouride salt will precipitate first? Calculate the concentration remaining in solution of the cation that first precipitates when the second fluoride salt begins to precipitate.
During the discharge of an alkaline battery, 13.9 g of Zn are consumed at the anode of the battery. What mass of MnO2 is reduced at the cathode during this discharge
What's the central atom for NaOH, how many bonds are formed, is it polar or nonpolar, and what's the direction of electronegativity
A substance has a molar mass of 60 g/mol with 40.0 percent carbon, 6.7 percent hydrogen, and 53.3 percent oxygen. What is its empirical formula?
If caffeine is soluble in methanol as well as methylene chloride then why couldnt I use methanol to extract caffeine from the aqueous portion. and why did I extract the aqueous phase two times with 50ml of DCM rather than once
Calculate the relative amounts of 1-chloropropane and 2-chloropane obtained the radical chlorination of propane
Which is the equivalence-point pH if 25.0 mL HCOOH (1.8 x 10-4) requires 29.80 mL 0.3567 M NaOH to reach the equivalence point?
1.00 mole of pure NOCl and .907 mole of pure Cl2 are placed in a 1.00-L container. Calculate the equilibrium concentration of Cl2(g).
What's the volume of hydrogen that can be produced during the reaction of 25 g of iron with excess water, at 100 °C and 150 kPa, taking into account the following equation
The initial mass of the the crude ether was 141 mg. The mass after recrystallization was 121 mg. Calculate the percent recovery from recrystallization.
A radioactive sample contains 2.50g of an isotope with a half-life of 3.8 days. How much of the isotope in grams will remain after 14.2 days
The degree of unsaturation, or index of hydrogen deficiency, is the number of pi bonds plus rings in a molecule. Specify the degree of unsaturation (index of hydrogen deficiency) of the following formulas
Calculate the concentration of the hydronium ion and then the pH in a solution that is formed by combining 300mL of 0.10 M Ca(OH)2 with 300mL of 0.10 M H2SO4? (Ka2 = 1.2 x 10^-2 for sulfuric acid).
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