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By how much must an enzyme reduce the activation energy of a reaction at 37°C in order for the reaction to occur 100 times faster than in the absence of the enzyme?
What is the acceptable maximum compression ratio and discharge pressure for the discharge temperature not to exceed 250 F to 300 F. What is the corresponding required compression horsepowe
Sufficient of a monoprotic acid is dissolved in water to produce a 0.0138 M solution. The pH of the resulting solution is 6.50. Compute the pKa for the acid
A 30.5 g sample of an alloy at 91.8°C is placed into 50.5 g water at 22.1°C in an insulated coffee cup. The heat capacity of the coffee cup (without the water) is 9.2 J/K.
pH of 20.0 mL of 0.10M acetic acid/sodium acetate buffer before and after the addition of 2.0 mL of 0.10 M NaOH; 2.0 mL 0.10 M HCl
Problem- What mass of H 2 O is required to form 1.3L of O 2 at a temperature of 325K and a pressure of 0.966atm
A compound is 40.0%C, 6.70%H, and 53.3%O by mass. Assume that we have a 100.g sample of this compound. What are the subscripts in the empirical formula of this compound?
What is the pH at the equivalence point for the titration of 0.20 M HCl with 0.20 M NH3?
Question- A solution is made by mixing 500.0 mL of 4.0 M NH3 and 500.0 mL of 0.40 M AgNO3. Ag+ reacts with NH3 to form AgNH3+ and Ag(NH3)2+ according to the equilibrium reactions
Problem- The Ksp for mercury(I) chloride (Hg2Cl2) is 1.2 x 10-18. Assuming complete dissolution in water, what is the solubility of Hg2Cl2 in grams per liter
What is the estimated value of the Faraday using the values for: a.) the electrode that gains silver? b.) the electrode that loses silver
suppose that coal of density 1.5 gcm3 is pure carbon. it is in fact much more com- plicated but this is a reasonable
Some liquid antacids contain suspensions of aluminum hydroxide [Al(OH)3. Write a balance equation for the reaction of AL l(OH)3 with the HCl in stomach acid ( Include the phase of each substance)
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