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Calculate the amount of heat evolved in the complete oxidation of 8.17 g of Al at 25oC and 1 bar pressure. The standard heat of formation of Al2O3 is -1676 kJ/mol. 4 Al(s) + 3 O2(g) 2 Al2O3(s).
Calculate the amount of heat energy in joules required to heat 50.0g of each substance from 25.0 c to 37.0 c
When a 2.3L sample of hydrogen gas at 25oC is heated to 120oC at constant pressure, what is the new volume of the gas?
What pH condition (either more soluble in acidic solution OR pH = 1 or more soluble in basic solution of pH= 13) would improve the following compounds solubility in water:
Consider the reaction 2 KClO3(s) ? 2 KCl(s) + 3 O2(g) How many grams of oxygen are produced from the complete reaction of 11.8 g of KClO3?
Complete and Balance the following redox equation. MnO4 + H +Br-->Mn2 +Br2 +H2O (acidic Solution). The sum of the smallest whole number coefficients is
A 0.200 L sample of H2 is collected over water at a temperature of 298 K. Atmospheric pressure is 99.00 kPa. Water has a vapor pressure of 23.00 Torr at this temperature. What is the mass of the sample of gas which was collected
How many valence electrons are in a Kr atom?
What molarity of aqueous aluminum sulfate solution can be expected to show the same conductivity
Water can be separated into hydrogen and oxygen gases by using electricity to break the bonds in a process called electrolysis. The reaction is:
The complex formed between Cu(I) and 1,10 phenanthroline has a molar absorptivity of 7000 L cm-1 mol-1 at 435 nm, the wavelength of maximum absorption.
55.0 mL of a 1.70 M solution is diluted to a volume of 278 mL. A 139 mL portion of that solution is diluted using 175 mL of water. What is the final concentration.
a running track measures 1056 ft per lap. to run 15.0 km how many laps should you run? How do you break the equation down into a solution map?
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