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A certain reaction with an activation energy of 185 kJ/mol was run at 485K and again at 505K. What is the ratio of f at the higher temperature to f at the lower temperature?
How much dry solute would you take to prepare each of the following solutions from the dry solute and the solvent?
In the actual O3 molecule the best description of the number of bonds between O-O atoms is____ bonds.
The concentration of Mg2+ in seawater is 0.052 M. What hydroxide concentration is needed to remove 90% of the Mg2+ by precipitation
Calculate the volume in, mililiters, of a 1.50M NaHCO3 solution that provides 28.0g NaHCO3, How many grams of H3PO4 is needed to prepare 550mL of a 0.31N solution?
calorimetry can be used to find heats of combustion. suppose a calorimeter helps someone to determine that 4032 kj of heat is released during the combustion of 88.0 grams of propane, C3H8 (44.0 g/mol).
What mass of glucose C6H12O6, would be required to prepare 5.000 X 10^3 L of a 0.215 M solution.
which one of the following is chiral? a. 1,1-Dibromopropane b. 1,2-Dibromopropane c. 1,3-Dibromopropane d. 2,2-Dibromopropane e. 2-Bromo-2-chloropropane
Consider the substitution reaction of H2S-BH3 with NH3, which generates two product molecules (ignore the states of matter), assuming that no species exceeds the octet rule. Given the following information:
Calculate the volume of 1.00 M nitric acid needed to react completely with 25.0mL of 1.84 M calcium hydroxide
Fe3O4 reacts with CO according to the reaction Fe3O4(s) + 4CO(g) --> 4CO2(g) + 3Fe(s). If 201 grams of Fe3O4 is reacted with excess CO, what mass of CO2 will be produced?
calculate the change in pH that occurs when 1.00 mmol of a strong acid is added to 100 mL of 0.0500 M HCl.
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA-, A2-) at pH 8.26?
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