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Once you make a 100ml of 0.2M solution with 2.422 g of substance. If you take 10 ml of that solution you just made and add 90 ml of water and mix it. Then take 5 ml of the mixture and bring it to 25ml, what will be the concentration ofthe final solution in M?
Assign oxidation numbers to all the elementals in each of the following: a)PO3^2- b)NH4^+ c)Fe(OH)2 d)HNO3 e)Cr2O7^2-
stock solution is prepared by adding 28 ml of 0.2 m na3po4 to enough water to make 76 ml. what is the po43-
Which compounds reacted only with AgNo3 in ethanol. Why. Did any compounds appear not to react under either condition, even when heat was added ? Explain, for each compound, why it might not react by a substitution reaction.
What is the empirical formula of this compound. If, for example, the compound was C2Cl3F, then one would input `C2Cl3F' - no spaces, no commas, proper case for the letters in the atomic symbols, and alphabetical order of the elements is required h..
describe in detail reagent solvent you can employ to prepare OTTO DIELS and KURT ALDER reaction. Note that this reaction involves the 1-4- addition of a conjugated diene in S-cis, S-trans conformation to an alkene in which two new sigma bond are f..
At a temperature of 60 ºC, about 0.8 g CO2 can be dissolved in 100 g water. what would be the mass of CO2 which can be dissolved in 100 g water at 10 ºC?
Determine the root-mean-square speed of CO2 molecules that have an average kinetic energy of 4.21*10^(-21) J per molecule.
When 0.455g of Thyroxine is dissolved in 10.0g of benzene, the freezing point of the solution is depressed by 0.3000C. What is the molar mass of Thyroxine?
When 2.848 grams of sulfur is dissolved in 50.0 ml of CS2 (density 1.263 g/ml), the solution boils at 46.54 C. what is the formula for sulfur
a balloon filled with helium gas has a volume of 762 mL at a pressure of 1atm. The balloon is released and reaches altitude of 6.5km, where the pressure is 0.5atm.
The burning acetic acid from the previous question is used to heat 1.4 L of water at 22.7°C. Assume all the heat produced in the last question is absorbed by the water => 240kJ. What would be the final temperature of the water?
3Cl2(g) + 6NaOH(aq) ? 5NaCl(aq) + NaClO3(aq) + 3H2O(l). How many grams of sodium chloride can be produced from 37.2 g of NaOH
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