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K a for aspirin (acetylsalicyclic acid) is 3.0 x 10 -4 at 25°C. What is the the acetylsalicylate anion, the conjugate base of aspirin?
A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.06 nm. It then gives off a photon having a wavelength of 1.0 × 103 nm.
Consider the following reaction: 2H2O + 2SO2 2H2 + 3O2 A reaction mixture initially contains 2.8M H2O and 2.6 M SO2.
The entry of Na+ provides a free-energy input of 10.8 kJ/mol under typical cellular conditions (external [Na+] = 143 mM, internal [Na+] =14 mM and a membrane potential = -50 mV). What is the ratio of glucose concentration outside and inside cells?
An ideal gas is in a cylinder with a volume of 250.0 mL at a temperature of 25 ºC and a pressure of 700 torr. The gas is expanded to a volume of 1.0 L and the temperature increased to 500 ºC.
Assume a gasoline is isooctane, which has a density of 0.692 g/mL. What is the mass of 2.5 gal of the gasoline (1 gal = 3.78 L)? Answer in units of kg.
What is the solubility of AgCl when it is in a solution of 0.15 M NaCl? (AgCl has Ksp = 1.8 x 10-10.) Make a reaction table. Include rows for initial concentration, change in concentration, and equilibrium concentration.
The temperature of the water rose t oa final temperature of 27.84 C. Neglecting heat loss to the room and the heat capacity of the beaker itself, what is the specific heat of the alloy?
what it is perscribed for 3.Mechanism of action( for example: how it binds to biological molecules, how it may inhibit enzyme activity.)
what crystal structure would you predict for a crystal containing fe2+ and f-? with radii 75 and 136 pm
What mass of iron is needed in order to supply the energy needed to warm 15.0mL of water (d= 1.00 g/cm3) from 23C to 37C
Select all of the correct statements about the relative acid strengths of pairs of acids from the choices below. HCl is a stronger acid than H2S because Cl is more electronegative than S.
Why is glycogen debranching enzyme necessary? a) It allows regulation of the rate of glycogenolysis. b) Because glycogen phosphorylase cannot convert G1P to G6P
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