Chemistry question and answers for October 08, 2023
- Q Calculate the pH for each of the following cases in thetitration of 50.0 mL of 0.170 M HClO(aq) with 0.170 M KOH(aq). Theionization constant for HClO can be found here.
- Q At constant volume, the heat of combustion of a particularcompound is –3680.0 kJ/mol. When 1.029 g of this compound (molarmass = 150.46 g/mol) was burned in a bomb calorimeter, thetemperature...
- Q Why is kcat not necessarily the best way to evaluate or comparethe activities of two enzymes? What “adjustment†can be made tomake the term more useful and why? A) Define...
- Q 100 mL of buffer solution that is 0.15M HA (Ka=6.8x10-5) and 0.20M NaA is mixed with 34.8mL of 0.35MNaOH. What is the pH of the resulting solution?
- Q 3)Suppose a solution is prepared by dissolving 15.0 g NaOH in0.150 L of 0.250 M nitric acid. What is the final concentration ofOH- ions in the solution after the reaction...
- Q Consider the titration of 100.0 mL of 0.42 M H3A by0.42 M KOH for the next three questions. The triprotic acid hasKa1 = 1.0 x 10-4, Ka2 = 1.0 x10-7,...
- Q Consider a solution that is 2.1×10?2 M in Fe2+and1.8×10?2 M in Mg2+.I know that the Fe2+ was the first to precipitate and that theminimum concentration of K2CO3 is1.5×10?9  MWhat I need...
- Q This question has already been answered, but there was not asmuch detail as i needed to understand what exactly to do and i needto understand it quick... could you please...
- Q MnO2 (s) + 2 CO (g) → Mn (s) + 2 CO2 (g)5. Calculate ΔG at 298K if MnO2 = 0.150 mol, Mn = 0.850 mol, CO= 0.250 M and...
- Q The Henry's law constant (kh) for Ar in water at 20°Cis 0.0015 mol/(L atm). How many grams of gas will dissolve in 2.78L of H2O in contact with pure Ar...
- Q describe the actuve location (S) of hemoglobin and myoglobin.How does the former function to transport 02 from thelungs to the cells where it is used?
- Q What is the silver ion concentration in a solution prepared bymixing 413 mL 0.356 M413 mL 0.356 M silver nitrate with 453 mL0.438 M453 mL 0.438 M sodium phosphate? The...
- Q The reaction A → B + C is known to be first order in A. Beloware data showing the concentration of A as a function of reactiontime.Time, h[A], M0.55.00 x...
- Q Answer the following questions based on HSAB theory. If usingFajans Rules, give the rule number and explain why it applies.1. Explain why aluminum perchlorate is less soluble thanaluminum cyanide. This...
- Q A student is examining a bacterium under the microscope. The E.coli bacterial cell has a mass of m = 1.80 fg (where a femtogram,fg, is 10−15g) and is swimming at...
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