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A ph meter is constructed utilizing hydrogen gas bubbling over an inert platinum electrode. Define the hydrogen electron at a pressure of 1.2 atm.
Define the other electrode is aluminum metal immersed in a 0.20 M Al3+.
Explain what is the cell potential when the hydrogen electrode is immersed in a sample of acid rain with a ph of 4.0 at 25 degrees C?
When the following equation is balanced, what is the mole ratio of H2O to Be3N2?
Calculate the concentrations of all species in a 0.100 M H3PO4 solution given the following Ka's: 7.5 X 10^-3 for H3PO4, 6.2 X 10^-8 for H2PO4-, and 4.8 X 10^-13 HPO4^2- Draw each of the structures.
An aqueous solution of KNO3 has a molal concentration of 1.099 mol kg-1. Its density is 1.0630 g mL-1. Calculate the molar concentration of KNO3.
44.0 mL of 0.140 M and Na2SO4 and 25.0 mL of 0.160 M KCl Indicate the concentration of each ion present ?
A mammoth skeleton has a carbon-14 decay rate of 0.46 disintegratioins per minute per gram of carbon (0.46 dis/min*g C)
a 77 kg rock with a volume of 4 l is completely submerged in water. the density of water is 1 kgl.a. what volume of
a pound of coffee beans yields 70 cups of coffee (4cups=1qt) how many milliliters of coffee can be obtained from 1 g of coffee beans
how many grams of urea must be added to enough water to obtain 115 ml of a solution with an osmotic pressure of 2.7 atm at 35 degrees celsius
When the pollutant's concentration reaches 90% of its steady-state value, the flow of the pollutant is stopped. On what date will the concentration of the pollutant fall to 1% of its maximum concentration? Assume that the rate constants of the inc..
Find delta H for HCl(g) given H-Cl bond enthalpy = +431 kJ·mol-1;
Draw the structural formula for 3-methylhexane and 2-butanol and identify the chiral carbon and the four "groups" attached to the chiral
Tartaric acid, which occurs in many fruits, has a molar mass of 150.1 g/mol and contains 63.96% oxygen by mass. How many oxygen atoms are in each tartaric acid molecules.
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