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Calculate the concentration (M) of the following solutions prepared by; Diluting 5 mL of 0.100 M NaOH with water until the final volume is 100 mL. and dissolving 23.4 g of sodium sulfate (Na2SO4) in enough water to form 125 mL of solution.
A 32.50-g sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 46.00mL. The solid and toluene together weigh 58.72g. The density of toluene..
As early as 1938, the use of NaOH was suggested as a means of removing CO2 from the cabin of a spacecraft according to the following (unbalanced) reaction: NaOH + CO2 → Na2CO3 + H2O.
Define what is the reaction mechanism for the conversion of 9-fluorenone to 9-fluorenol via sodium borohydride as well as aqueous acid reduction. Illustrate using curved arrows to show the flow of electrons.
1 calorie = heat required to raise temp. Of 1.00 g of H2O by 1.0 oC. Which has the larger heat capacity? How much energy is transferred due to T difference?
What is the pressure of dry H2 in mmHg. In atm. d. Assuiming ideal gas behavior, how many moles of H2 has were collected.
What is the pH in which 10.0mL of 0.010 mol/L Sr(OH)2 are added to 10.0mL of 0.010mol/L HCl?
First lab experiment - zinc and copper aqueous solutions were tested in a microscale cell well where the voltage reading was 1.04V. Solutions were each at about 5mL.
What volume of a 15.0% by mass NaOH solution, which has a density of 5.00 L of an NaOH solution with a pH of 10.4
The two following compounds are called crown ethers and they are used to protect alkali metal ions in some reactions. The oxygen atoms in each are joined -(CH2)2- or -(CH2)3- groups.
The zinc content of a 1.23 g ore sample was determined by dissolving the ore in HCl, which reacts with the zinc, and then neutralizing excess HCl with NaOH. Zn+2HCl-->ZnCl2+H2
Will the equilibrium concentration of Fe3+ be too high, too low, or unaffected. Explain. Will the compute equilibrium be at constants being too high, too low or unaffected. Explain.
Decide whether or not each metal dissolves in 1 M HCl. For those metals that do dissolve, write a balanced redox reaction showing what happens when the metal dissolves.
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