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Formic acid, (HCOOH). It partially ionizes when mixed with water according to the following chemical reaction: HC00H+H20→H30++HC00- Write down the expression for the reaction quotient when formic acid is mixed with water as shown above. If at equilibrium the concentration of HCOOH is 0.6 M, HCOO- is 0.3 M and H+ is 3.6 x 10-4, calculate the equilibrium constant Ka
when ethane c2h6 reacts with chlorine cl2 the main product is c2h5cl but other products containing cl chlorine such as
The half life of polonium-210 is 138.4 days. How many milligrams of polonium-210 remain after 415.2 days if you start with 2.0 mg of the isotope?
the decomposition of solid ammonium carbonate to gaseous ammonia and carbon dioxide is an endothermic reaction. given
A certain automobile of mass 1635 kg travels on a German autobahn at 157 km·h-1. What is the wavelength of the automobile?
(b) What is the normality of a 0.050 M H3PO4 (based on neutralization of the acid to the HPO4^2- ion?
a solution contining agno3 is mixed with a solution of nacl to form a solution that is 0.10 m in agno3 and 0.075 m
Write two equations for the dehydration of 2-methyl-2-butanol. One should show yhe structures of both alkenes, and the other one should be balanced.
Two wires with the same length but different cross sectional area. Which wire has a larger electric resistance?
hard, amorphous polymers become soft and flexible at the glass transition temperature B) crystalline regions of a polymer melt transition temperature C
At 21.0 C, a solution of 18.26 g of a nonvolatile, nonpolar compound in 33.25 g ethyl bromide, C2H5Br, has a vapor pressure of 336 torr. The vapor pressure of pure ethyl bromide at this temperature is 400 torr. What is the molecular mass of the co..
What difference do the + and - make? do you add/subtract protons? Which of the following species has the largest radius. A. Li+ B. Na+ C. K+ D. Ar E. Cl-
hammered into a thin sheet to be used as aluminum foil. If the thickness of the aluminum foil is uniformly 13 um, what area of aluminum foil (in cm^2) can be made? The density of aluminum metal is 2.969 g/cm^3.
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