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A sample of gas occuplies a volume of 62.7 mL. As it expands, it does 120.3 J of work on its surroundings at a constant pressure of 783 torr. What is the final volume of the gas?
Minimal energy cost of H2S conversion to hydrogen and sulfur in gliding-arc is 1.6 eV/molec
Draw resonanc contributors for the following species. Indicate which are major contributors and which are minor contributors to the resonance hybrid:
Zn (s) + 2HCl (liq) -> H2 (g) + ZnCl2 (s), How many moles of ZnCl2 form when 6.3 mol of Zn reacts?
A portable photometer with a linear response top radiation registered 83.2 microamps with a blank solution in the light path. Replacement of the blank with an absorbing solution yielded a response of 451 microamps calculate
draw the structure of the expected dichlorocarbene adduct of methyl methacrylate. another product could have been obtained. It is the chloroform adduct to the double bond (Michael type reaction). what would this structure look like.
Nitrogen and hydrogen combine at high temperature, in the presence of a catalyst, to produce ammonia. N2 (g) + 3H2(g) >> 2NH3(g)
The addition of a sodium flouride solution to one of lead nitrate results in a net ionic equation of PB 2+ (aq) + 2 Fe- (aq) yielding PbF2 (s). If 25.0 ml of 0.200 M NaF solution are mixed with 10.0 ml of 0.150 M Pb(NO3)2 solution, how many grams ..
If the solubility of calcium phosphate is 3.41*10^-5 g/l. How many liters of water are required to dissolve 1g of calcium phosphate
the molar mass is not identical, the molar mass of Br2 is only 159.80 g/mol compared to 162.35 g/mol for ICl F: ICl is polar while Br2 is nonpolar
A 0.003525-mol sample of an organic compound was burned in oxygen in a bomb calorimeter. The temperature of the calorimeter increased from 24.5oC to 26.7oC.
Calculate the pH of a solution containing an amphetamine concentration of 200 mg/L. Express your answer to one decimal place.
Sulfur, S8, combines with oxygen at elevated temperatures to form sulfur dioxide. If 288 oxygen molecules are used up in this reaction, how many sulfur molecules reacted. In the reaction above, how many molecules of sulfur dioxide were formed.
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