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25.00 mL of 0.0200 M MnCl2 is titrated with 0.0250 M Na2H2Y. Both solutions are buffered to pH 8.20. Determine pMn after the addition of the following volumes (mL) of the Na2H2Y.
a) 0.00b) 5.00c) 18.00d) 20.00e) 25.00f) 35.00
Propose a reasonable synthetic strategy for the synthesis of trans-6-methyl-3-heptene from 4-methyl-1-pentyne.
Suppose that the microwave radiation has a wavelength of 12.7 cm. How many photons are required to heat 200. mL of coffee from 25°C to 62°C?
how many milliliter of 0.165M KMnO4 are needed to react with 108.0ml of 0.165 M oxalic acid? How many milliliter of 0.165M oxalic acid are required to react with 108ml of 0.165M KMnO4
Calculate the amount of heat liberated (in kJ) from 347 g of mercury when it cools from 85.0°C to 15.0°C.
Write a complete stepwise mechanism for the reaction of cyclopentanone with bromine in acetic acid to give 2-bromocyclopentanone. Show all intermediate structures and all electron flow with arrows.
an adult person radiates heat to the surroundings at about the same as a 100-watt electric incandescent lightbulb. what is the total amount of energy in kcal radiated to the surroundings by an adult in 24 hours?
Quicklime (CaO) is produced by thermal decomposition of calcium carbonate(CaCO3). Calculate the volume of CO2 at STP produced form the decomposition of 146 g CaCO3 by the reaction: CaCO3(s) -> CaO(s) + CO2(g)
The molar mass of corn oil is 890g/mole. How many moles and how many grams of sodium hydroxide are required to react with the 15mL (13.7g) of corn oil? Show your calculations.
If an aqueous solution has a hydroxide ion concentration ([OH-]) of 5.94 x 10-5 mol/L, what is the hydronium ion concentration? 4.48 x 10-12 mol/L 1.68 x 10-10 mol
the density of an unknown compound made from sulfur and oxygen is 2.47 x 10^-3 g/mL at 23 C and 76 kPa. what are the possible molecular formulas for the compound?
Thin layer chromotography it would be caffeine, but why? both have amide functional groups making them very polar, so why is caffeine more polar?
What is the correct method for determining how many moles of calcium oxide are produced in the reaction of 10.g calcium with excess oxygen?
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