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Sulfide precipitates are usually grouped as sulfides insoluble in acidic solution and sulfides insoluble in basic solution. Define why there is a difference between the two groups of sulfide precipitates.
Use Lewis structures and bond energies to calculate the enthalpy change of the following reaction: HCN(g) + 2H2(g) => CH3NH2(g) a. 158 kJ b. -158 kJ c. -590 kJ d. 590 kJ e. none of these
How many milliliters of 0.280M Na2S2O3 solution are needed to titrate 2.396 g of I2 according to the equation below?I2+2SO3 2- ----> S4O6 2- + 2I-
What statement below best describes the graph representing the integrated 1st order rate law. plot of ln[a] vs t having a straight line negative slope equal to -k
Diamonds are measured in carats, where 1 carat=0.200 g. The density of diamond is 3.51 g/cm^3. What is the volume of a 2.50-carat diamond
Consider 3 amino acids A, B, and C. How many trimeric isomers would be formed. Show them.
how many ml of water at 23degrees celsius with a density of 1.00gml must be mixed with 180mlabout 6oz of coffee at 95
Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. If 65.0 g of Na are obtained, how many amps are required to produce this in 7.50 hours
When we go down a group, electron affinity should become more positive (less energy released), since the electron is added at increasing distances from the nucleus.
Consider the ionic strength of the solution to be 0.10 M and consider each ionic form of aniline to have an activity coefficient of 0.77.
Calculate the amount of N2 gas released (in liters at 37° C and 1.5 atm) when the diver returns to the surface of the water, where the partial pressure of N2 is 0.80 atm.
a sodium hydroxide solution is standardized using 0.502g of solid oxalic acid h2c2o4. find the molarity of the base if
Calculate the standard cell potential for Mg(s) + Fe2+(aq)--->Mg2+ + Fe(s) Express the standard potential numerically in volts.
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