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Question - Write an equation explaining why H2 gas is evolved when HCl is added during the workup. You may abbreviate the NaBH4 as hydride H- (hint hudride is both nucleophilic and basic)
State your respond by means of significant figures.
A mass of 137 g of manganese dibromide is dissolved in 330 g of water. What is the molality of the solution
A calorimeter containing 200.0 mL of water was calibrated by carrying out a reaction which released 15.6 kJ of heat. If the temperature rose 3.25 degrees celcius then the heat capacity of the calorimeter inclusing the water is?
If a temperature increase from 22.0 degrees Celsius to 33.0 degrees Celsius triples the rate constant for a reaction, what is the value of the activation barrier for the reaction
a buffer solution is prepared by adding 15.00 g of sodium acetate nac2h3o2 and 12.50 g of acetic acid to enough water
Show all of your work for each of the following problems. An aluminum nail of mass 5.00g is immersed into a solution of copper(II)nitrate. How many grams of elemental copper can be produced from the reaction
A test tube containing a mixture of KCl, KClO3, and MnO2 having a total weight of 23.584 g was heated to compose the KClO3. After heating, the mass was found to be 22.347 g.
From the composition of lignite coal, calculate the mass of sulfuric acid that could potentially form as acid rain from burning
A carbon-carbon bond requires 348kj/mol to break. What is the longest wavelength of radiation with enough energy to break carbon-carbon bonds?
Explain why is longitudinal diffusion a more serious problem in gas chromatography than in liquid chromatography
Calculate a lattice energy for (in kilojoules per mole) using the following information.
Solve for the total moles, then the total pressure of the mixture using the Ideal Gas Law. Next find the mole fraction of Argon and solve for partial pressure of Argon.
What is the molar mass of the unknown gas. Elemental analysis of the unknown gas from Part A revealed that it is 30.45% N and 69.55% O. What is the molecular formula for this gas.
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