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A gas absorbs 2.5 J of heat and then performs 13.1 J of work. The change in internal energy of the gas is?
The initial pH. the volume of added base required to reach the equivalence point the pH at 12.0 mL of added base
how many grams of oxygen are produced. what are the limiting and excess reactants and how much ER remains
Aluminum hydroxide and sulfuric acid reaction, Which reagent is the limiting reactant when 0.450 mol Al(OH)3 and 0.550 mol H2SO4 are allowed to react? How many moles of the excess reactant remain after the completion of the reaction? Please explain..
Calculate the final temperature of 39 of ethanol initially at 14 upon absorption of 698 of heat. (density of ethanol =0.789 )
Enough of a monoprotic acid is dissolved in water to produce a 0.0198 M solution. The pH of the resulting solution is 6.37. Calculate the Ka for the acid.
Draw the reaction between benzoic acid and NaOH and explain why it is neccessary to use 3M NaOH as the aqueous layer to better separate the benzoic acid.
A 3 g sample of C8H16O is burned completely in excess oxygen to yield CO2(g) and H2O(l) at 25 C, releasing 117.83 kJ of energy. What is the enthalpy of formation of C8H16O?
The paint formerly used on some storage tanks contained aluminum powder, which reflected heat from the surface of the tanks. Why did experts recommend grounding these tanks and storing only noncombustible material in them
Calculate the mass in grams for a sample of Al that absorbs 1.70kJ when the temperature increases from 56 degree Celsius to 177 degree Celsius?
Determine What is the ? Ssys for the process?(if it is given the specific heat capacity for ethanol is 2.42 J/g K.) express your answer in units of J/K
A solid sample containing some Fe^2+ ion weighs 1.062 g. It requires 24.12 mL 0.01562 m KNno4 to titrate Fe^2+ in the dissolved sample to a pink end point. How many moles MnO4- ion are required
How much energy in kilojoules is required to convert 100 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL.
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