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When one mole of caffeine (C8H10N4O2) is burned in air, 4.96 × 103 kJ of heat is evolved. Five grams of caffeine is burned in a bomb calorimeter. The temperature is observed to increase by 11.37°C. What is the heat capacity of the calorimeter in J/°C?
It is desired to obtain the highest possible volume of 1.25 M urea, [Urea (aq)], from the following sources: 345 mL of 1.29 M urea solution, 485 mL of 0.653 M urea solution and 835 mL of 0.775 M urea solution. How can it be done? What is the maximum volume of solution that can be obtained?
Given the equation, N2(g)+3H2(aq)⇌2NH3(g) find Q and determine which direction the reaction will shift in order to reach equilibrium. Given: N2(g)+3H2(aq)⇌2NH3(g), where: ([N2]= 0.04M\), ([H2]= 0.09M\), [NH3] = 0.16 M, and K=0.040
Based on the diagram of the fluorine atom, the electrons are circling the nucleus at fixed distances. Based on the behavior of positive and negative charges, would the model of the atom be realistic?
ammonium sulfate + lithium hydroxide
A chemist must dilute 23.4 mL of 444. mM (Molarity) aqueous sodium thiosulfate (Na2S2O3) solution until the concentration falls to 288 mM. He'll do this by adding distilled water to the solution until it reaches a certain final volume.
Calculate this final volume, in milliliters. Round your answer to 3 significant digits
Using Zaitsev's rule, choose the most stable alkene among the following: (1) (Z)-hex-3-ene (2) hex-1-ene (3) 2-methylpent-2-ene (4) They are all of equal stability according to Zaitsev's rule.
Which of the following is the correct structure of 3-chloro-5-methylcyclohexene? (1) ClCH3 (2) CH3Cl (3) CH3Cl (4) ClCH3
design a method to determine the volume of gas when fuels are combusted
