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When sulfuric acid is a component of polluted air, it chemically attacks statues, memorials, and monuments made from limestone. Given that the most common mineral in limestone is calcium carbonate, describe how these limestone objects are corroded by the sulfuric acid in polluted air. What chemical reaction is involved here?
Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide.
a. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as
3H2SO4 . 5SO3? Show your solution.
b. Discuss at least three potentially hazardous features associated with concentrated sulfuric acid.
how do you find delta change H° of gaseous HCl with the following information: 1) N2(g) + 3H2 (g) > 2NH3(g) delta changeH°(rxn) = -91.8 kj 2) N2(g) + 4H2 (g) +Cl2 (g) > 2NH4Cl(s) detla changeH°(rxn)= -628.8 kj 3) NH3 (g) +HCl (g) >NH4Cl(s) delta c..
When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m.
How many grams of water are required to dissolve 24g od KNO3 at 100 degrees celsius?
a gas occupying a volume of 810. ml at a pressure of 0.970 atm is allowed to expand at constant temperature until its
50 g of aluminum oxide is produced in the reaction of aluminum metal and oxygen gas at STP. How many liters of oxygen gas were reacted?
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
Draw the two possible products of the reaction between benzaldehyde and ethylpropylketone. Do not draw the products of the double-condensation.
Assuming that an enzyme uses a mechanism similar to that of chymotrypsin, determine which residue of the catalytic triad (Asp, His, Ser) corresponds to pKa of 6.25 and 8.75.
What magnitude of current is required to produce 1.0 kg of sodium metal in one hour by electrolysis?
The density of osmium is 22.57g/cm^3 what volume will be occupied by 4.06 kg of osmium
The half-life of methylmercury in the human body is estimated to be close to 100 days. Suppose a person weighing 65 kg eats 0.5 kg of fish containing 0.5
The combustion of 13.2 g of propane, C3H8 (g), liberates 6.6x10^3 kJ of heat. What is the enthalpy change (kJ) for the reaction?
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