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Write the balanced formula unit equation for the reaction of the complete combustion of pentane, C5H12. What is the sum of the coefficients?
A) 16
B) 19
C) 20
D) 21
E) 22
What quantity of heat would be evolved if 75.00g of mercury (Hg=200.59), (O=16.00) was burned in oxygen?
If a temperature increase from 22.0 degrees Celsius to 33.0 degrees Celsius triples the rate constant for a reaction, what is the value of the activation barrier for the reaction
What is the net redox reaction that occurs when Pt comes into contact with acidic KMnO4
the most common source of copper cu is the mineral chalcopyrite cufes2. how many kilograms of chalcopyrite must be
Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains .0011% Pb by mass. What volume of water in mL contains 115 mg of Pb
Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.95 M B(aq) with 0.95 M HCl(aq).
Determine the root-mean-square speed of CO2 molecules that have an average kinetic energy of 4.21*10^(-21) J per molecule.
Enough of a monoprotic acid is dissolved in water to produce a 0.0193 M solution. The pH of the resulting solution is 6.31. Calculate the Ka for the acid.
a gas at 763 mmhg and 31 degrees C occupies a volume of 4.98 L. Calculate its volume at STP in g/mole
A flask contains a mixture of Ne(g) and Ar(g). There are 0.250 mol of Ne(g) which exerts a pressure of 205 mmHg. If the Ar(g) exerts a pressure of 492 mmHg.
How many chiral centers are there in aldosterone. How many total stereoisomers are there in aldosterone
Calculate the degrees of unsaturation in a compound with the molecular formula C3H6 and draw two possible structures
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