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A total of 2.00 of a compound is allowed to react with water in a foam coffee cup and the reaction produces 121 of solution. The reaction caused the temperature of the solution to rise from 21.0 to 24.7 . What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
Write a Lewis structure for each of the following. Part A {\rm Al} Draw the particle by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons and nonbonding electrons.
How many circular clarifers will be needed if each one is 90 ft in diameter and the surface overflow rate must be less than 575 gal/ft^2/day at the average daily flow rate?
what are amino-acid trna synthetase enzymes and why are they important in the biology of cells? how many different ones
What is the percent yield of ammonia when 150.0 g of nitrogen reacts with 32.1 g of hydrogen if the actual yield is 174 grams?
Dentists might use a mixture of 40% N2O and 60% O2 as an initial anesthetic of nitrous oxide(although exact proprtions may vary). Determine the entropy of mixing for 1 mole of such a mixture. Assume ideal gas conditions.
What is the possible chemical explanation for this? I understand that a reaction using a thiamine catalyst at room temperature for 48 hours may lead to lower yield due to catalyst decomposition, but I'd like to know a more technical explanation.
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 16.8g of carbon were burned in the presence of 57.4g of oxygen, 12.6g of oxygen remained unreacted. What mass of carbon dioxide was produced
A mixture at equilibrium at 827 C contains .552 mol CO2, .552 mol H2, .448 mol CO, and .448 mol H20. The balanced equation is shown below: CO2(g) + H2(g) CO(g) + H2O(g) What is the value of Keq?
the specific heat of ethylene glycol is 2.42 J/g-K. How many J of heat are needed to raise the temperature of 62.0 g of ethylene glycol from 13.1 C to 40.5 C ?
An empty gasoline can with dimensions 15 cm by 40 cm by 12.5 cm is attached to a vacuum pump and evacuated. if the atmospheric pressure is 14.7 lb/in^2.
Write a balanced equation for an acid-base reaction that would produce each of the following salts; predict whether an aqueous
Calculate the wavelength of the photon emitted when an electron makes a transition
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