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Define how bicarbonate buffers aquatic systems against drastic changes in pH. (Illustrate reaction equations)
How many grams of CaH2 are needed to generate 53.5 L of H2 gas if the pressure of H2 is 1 atm at 194 C.
A 25.00mL sample of KNO3 solution was diluted to 1.000 x 10^3 mL. The concentration of the final solution is 0.00383 M. Calculate the concentration of the original solution in M.
When a reddish-brown bromine solution (the solvent is often carbon tetrachloride) is added to the alkene shown below, the brown color of the bromine solution disappears
determine the mass of aluminum acetate that can be made if you do the reaction with 125 grams of acetic acid and 275
How many grams of dry NH4Cl need to be added to 2.30 L of a 0.100 M solution of ammonia,NH3, to prepare a buffer solution that has a pH of 9.00
the rate constant is 0.0190 s-1. At what temperature in degrees Celsius would this reaction go twice as fast?
Lithium reacts with oxygen to make lithium oxide. Explain what is the maximum mass of lithium oxide (g) that could be prepared from 19.63 g of Li(s) and 80.78 g of O2(g)
5.00 mL of a 7.5x10^-3 M solution of HNO3 is diluted to 200. mL. What is the pH of the resulting solution
A compound found in coal dust has a percent composition by mass of 94.08 % C and 5.92 % H and a molar mass of 153.203 g/mol. What is the compound
Draw the skeletal structure for trans-1-bromo-2-isopropylcyclopentane. Make sure the tapered end, i.e. the thin end, of the wedge bond is attached to the parent.
For the equilibrium 2h2s(g)=2h2(g)+s2(g) Kc=9.0x10^-8 at 700 degree cl the initial concerntration of the three gases are0.3M h2s,0.3h2 and 0.150 s2. determine the equilibrium concentrations of the three gases
suppose that you titrate a 3 g sample of orange juice and it turns out to contain only 95.5mg of vitamin c. further it
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