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How many moles of oxygen were used in the combustion of solid naphthalene, C 10 H 8 , if 51 kJ of energy were released to the surroundings?
A solution has an H3O1+ concentration of 1.7 10-2 M. What is the hydroxide ion concentration?
The product in the 3rd step of this multi-step synthesis, p-aminobenzoic acid (PABA), was a common ingredient in sunscreen lotions. PABA is such an effective sunscreen due to the many resonance structures that can be drawn for this molecule.
Calculate the volume of 3 M NH3 that you need to use to react stoichiometrically with the quantity of acetylacetone given the list of reagents
For the titration of 40.0 mL of 0.250 M acetic acid with 0.200 M sodium hydroxide, determine the pH when
A reaction has a standard free-energy change of -12.30 kJ mol-1 (-2.940 kcal mol-1). Calculate the equilibrium constant for the reaction at 25 °C.
Suppose you wanted to heat a mug of 250. mL water from room temperature, 25°C, to 100°C to make a cup of tea. How much energy (in joules and in calories) would you need from your microwave.
A gaseous fuel mixture stored at 743mmHg and 298 K contains only methane and propane. When 11.8 L of this fuel mixture is burned, it produces 767 kJ of heat. what is the mole fraction of methane in the mixture
Oxalic acid, H2C2O4 has acid dissociation constants Ka1 = 5.9 x 102 and Ka2 = 6.4 x 105. What is the pH after 20.00 mL of 0.0500 M NaOH is added to 5.00 mL of 0.2000 M H2SO3
A very long insulating cylindrical shell of radius 6.70cm carries charge of linear density 8.60Nc spread uniformly over its outer surface.
A disproportionation reaction is a type of oxidation-reduction reaction. which species is oxidized and which is reduced? B.) If 1.0 mL of 55% HSO3^- by mass is obtained in the reaction, what mass of S2O3^2- was present initially
compouds a and b are alcohols with the molecular formula c3h8o. the following informations was obtained from a mass
if a 2.5 l reaction vessel initially contains 725 torr of cyclopropane at 485c how long will it take for the partial
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