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When a 18.5 g piece of copper originally at 99.5C is placed in 58.5 g of water at 24.0C, the temperature of the water rises to 26.1C. If the specific heat of water is 4.180 J , calculate the specific heat of copper. can you show work and the anser is 0.38 J g^-1 c^-1
particulat reaction doubles between 273k and 283k , calculate the value of the activation energy for the reaction.
Calculate the enthalpy of the reaction: 2NO(g) + O2(g) --> 2NO2(g) given the following reactions and enthalpies of formation:
Given the following thermochemical equations, C2H2(g) + 5/2 O2(g) -----> 2CO2(g) + H2O(l) enthalpy = -1299.5 kJ
determine the theoretical yield and the percent yield of ethanol if 684 g of sucrose undergoes fermentation and 349 g of ethanol is obtained
The values for nitrous acid (HNO2) and hypochlorous (HClO) acid are 4.5 x 10^-4 and 3.0 x 10^-8 , respectively. Which one would be more suitable for use in a solution buffered at pH = 7.0
If a 2.1 L reaction vessel initially contains 723 torr of cyclopropane at 485 degrees C , how long will it take for the partial pressure of cylclopropane to drop to below 105 torr ?
The taste of sour milk is lactic acid. What is the molecular formula for lactic acid if the percent composition is 40.00% of C, 6.71% of H, 53.29% of O and the approximate molar mass is 90 g/mol
Show the chemical equation for this reaction. Explain FULLY why 2-methyl-2-hexene is the major product.
Calculate the freezing point of a solution of 23.4 grams of benzoic acid (C6H5CO2H) dissolved in 613 grams of naphthalene.
How do old dispersive infrared (IR) instruments use a grating to separate the infrared source by wavelength before passing through the sample?
Calculate acidity of sample and express in % (w/v) CH3COOH. show complete solutions and please don't cite websites or like
A hydrogen atom with an electron in its ground state interacts with a photon of light with a wavelength of 1.22 × 10?6m. Could the electron make a transition from the ground state to a higher energy level
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