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Calculation of energy associated with one mole of these photons, in kJ when frequency is given.
Some IR-rays emit a frequency of 7.86x1012Hz. What is the energy associated with one mole of these photons, in kJ?
Calculate the moles of hydrogen gas produced by the reaction of 0.848 g of aluminum with hydrochloric acid Thanks
Eliminate the parameter to determine a Cartesian equation for the curve in y= f(x) form. given the parametric equations and any restrictions on the parameter t, identify the bounds for the values of x and y. State the range of values using interval..
Calculate: Solution Density Mass fraction and % (sodium acetate) Mole fraction (sodium acetate) Molarity molality molality of solute particles
Titrated with 0.10 M HBr. Determine the pH of the solution after the addition of 400.0 mL HBr.
a metal cube having a mass of 19.51 grams is dropped into a graduated cylinder containing 9.50 ml of water. this causes
Question- The reduced form of methylene blue is often used to indicate the presence of oxygen contaminants in anaerobic systems. Explain how this species can be used as an indicator in these systems. Be sure to include any 1/2 reactions involved.
What is the longest wavelength of radiation with enough energy to break carbon-carbon bonds
If the reaction mixture initially contains only O2(g) and F2(g), then at equilibrium, the reaction mixture will consist of essentially only OF2(g).
A 10.0 g piece of metal at 100 degrees C is transferred to a calorimeter containing 50.0mL of water initially at 23.0 degrees C. Compute the specific heat capacity of the metal if the heat capacity of the calorimeter, C cal is 25.0 J/K. The final ..
Write the formula of the reactants and products-including the symbols for the state- (s), (l), (g), (aq)- then balance the equation.
Oxygen gas, generated by the reaction 2KClO3(s) ? 2KCl(s) + 3O2(g), is collected over water at 27°C in a 3.78-L vessel at a total pressure of 730. torr. (The vapor pressure of H2O at 27°C is 26.0 torr.) How many moles of KClO3 were consumed in the..
A rock is found to contain 83.7% of the amount of uranium-238 that it contained when it was formed. (The amount that the rock contained when it was formed can be deduced from the presence of the decay products of u-238 .) How old is the rock?
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