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Explain how would you make 100ml of a carbonic acid buffer at 0.2M as well as ph =9.8 using 0.5M HCO3 and either 0.1M NaOH or 0.1M HCl and water?
Explain what could you use to make a 0.5 M buffer at ph= 6.0? How would you make it?
Explain what experimental method would you suggest for the preparation of t-butylbromide. Define by writing a reaction
Formic acid, CH2O2, can be decomposed to produce hydrogen. The Lewis structure for formic acid, CH2O2, is show below. The atoms are labeled A, B, C, D, E.
answer the following questions for the soil data listed below.nbspnbspnbspnbspnbspnbspnbspnbsp exchangeable cations
Solution 1.0C 1xF 1.8F 32F2 to carry out the desired conversion. When the absolute temperature is 400 K, what is the Fahrenheit temperature?
Ice has the unusual property of a melting point that is lowered by increasing pressure. if this is the reason we can skate on ice, would a 75-kg skater whose skates contact the ice with an area of 0.1cm^2 be able to skate at -3C
Methylbenzene and 1,2-dimethylbenzene mix to form an ideal solution. At 90oC, the vapor pressure of pure methylbenzene is 400 Torr and that of pure 1,2-dimethylbenzene is 150 Torr.
A balloon with the volume 40.0cm^3 contains helium gas at STP. What is the number of helium atoms in the balloon
Compute the resonance energy of benzene given that the standard molar enthalpy of hydrogenation of benzene is -208 kJmol-1 and that for cyclohexene is -120 kJmol-1.
A pure titanium cube has an edge length of 2.71in How many titanium atoms does it contain. Titanium has a density of 4.50 g/cm^3
A 20.0 mL sample of 0.200 M HBr solution is titrated with 0.200 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added.
What is the reason for why a sand bath was used instead of a water bath for this particular pressure reaction? (a) Instructor preference (either could have been used with equal success).
a weather balloon is filled with 15.0 liters of helium at 27 degree celsius and 0.99 atm. what volume does the balloon
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