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Calculate the hydrogen Ion concentration, in moles per liter, for solutions with each of the following pH values.
a.) pH = 1.27b.) pH = 12.7c.) pH = 6.02d.) pH = 8.97
what is the molarity of a solution containing 7.0 moles of solute in 4300 mL of solution?
Chlorine gas can be produced commercially by passing an electric current through a con- centrated solution of sodium chloride (brine).
What is the volume of the container needed to store 0.8 moles of argon gas at 5.3 atm and 227°C.
Determine compound having greater Ksp or compound having smaller Ksp ? compute [Ag + ] when CuI just start to precipitate. What % of Ag + remains in solution at this point?
A buffer solution is made by dissolving 0.45 moles of a weak acid (HA) and 0.33 moles of KOH into 800 mL of solution. What is the pH of this buffer? Ka = 5.9 × 10-6 for HA.
A water sample has a pH of 8.21 and a total calcium concentration of 143 ppm. What is the total alkalinity of the water?
What is the relationship between myelin sheath and dopmaine? What does myelin sheath do, how does it porvide insultion. What disease are caused when myelin sheath stops working and how does this effect elderly people?
An equilibrium mixture at 225 degrees C contains 0.10 M NH3 and 0.20 M H2 for the reaction 3H2 (g) + N2 (g) --- 2NH3(g) If the Kc at this temperature is 1.7 X 10 2.
When 1 mole of H2(g) reacts with C2H4(g) to form C2H6(g) according to the following equation, 137 kJ of energy are evolved. What is the value of q?
A single-stranded RNA phage replicates in E. coli with no DNA intermediates. The following experiments were performed to clarify the phage's mode of replication.
Calculate the wavelength of the photon emitted when the hydrogen atom undergoes a transition from n = 5 to n = 3. (R = 1.096776 × 107 m-1).
hydrogen peoxide decays into water and oxygen in a first-order process at 20 degrees celcius. H2O2 yeilds H2O and 1/2 O2 the rate expression is 1.77X10 -5 [H2O2] what is the half life in hours of h2o2.
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