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What is the purpose of the wagner act and what rights of workers did it protect?
Explain what is the molar Gibbs free energy for the formation of water vapor from hydrogen gas as well as oxygen at 400K
Problem- Determine the pH change when 0.072 mol HNO3 is added to 1.00 L of a buffer solution that is 0.328 M in CH3COOH and 0.286 M in CH3COO-.
a 51 kg person drinks 490. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 17% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
Write the structural formula for each of the following compounds.
Calculate the molarity of a solution made by adding 31.3 mL of concentrated potassium hydroxide (34.5 % by mass, density 1.46 g/mL) to some water in a volumetric flask, then adding water to the mark to make exactly 250 mL of solution.
Why is the water bath used to heat the reaction? 4)What is the mechanism of the reaction of phenylmagnesium bromide and CO2? Include the workup steps. 5) In this experiment, it is important to use freshly obtained dry ice. Why?
A blue Cu (II) cation salt solution was mixed with a green Ni (II) cation salt solution and an aqua colored solution resulted. Is this a chemical change or a physical change?
What is the pH of a dilute 0.00336 M solution of formic acid? Formic acid is monoprotic with a Ka of 1.70 x 10-4. You should use the quadratic equation for this one because the solution is very dilute.
Explain what molar ratio of HPO4 2- to H2PO4 - in solution would produce a pH of 7.0? Phosphoric acid (H3PO4) a triprotonic acid has pKa values- 2.14, 6.86, and 12.4. Merely one of the pKa values is relevant here.
An experiment was performed to determine the Ksp of Ca(OH)_2_. A solution containing 2.00 x ^-2 M Ca(NO3)_2_ was saturated with Ca(OH)_2_ and filtered. Two samples of the saturated solution were titrated with 5.021x10^-2 M HCI, in order to determi..
the modern periodic law is based on a atomic number batomic mass c atomic weight d chemical
Problem- A gas is collected over water at 320C. At this temperature, water has a vapor pressure of 36 Torr. If the volume of 3.50 moles of the gas is 1.18 L, what is the total pressure
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