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Discussion
A metal has a density of 7.49 g/cc. If a cylinder of the metal weighing 25.2 g is dropped into a graduated cylinder containing 20.0 mL of water, what will the new water level be?
What happens to the absorbance at the analytical wavelength for P of the mixture as the reaction progresses?
Problem- How many half-lives. Are required for the concentration of a reactant to decrease to 25 % of its original value
Both pieces are placed in a calorimeter whose heat capacity is negligible. What is the final temperature inside the calorimeter (c of copper = .387 J/gK)
Discuss the similarities and differences that exist between the three basic types of occupational exposure limits (OELs).
An electron drop to what energy level is likely to emit a photon of red light?the secondthe firstthe third
When a 3.25g sample of solid sodium hydroxide was dissolved in a calorimeter in 100.0 g of water, the temperature rose from 23.9 C to 32.0 C. Calculate deltaH (in kJ/mol NaOH) for the solution process:
What mass (in grams) of NH4Cl is needed to prepare 450mL of 0.251 M NH4Cl solution?
The percent composition by mass of an organic compound is: 32.01%C, 4.03%H, and 63.96%O. if its molarcular mass is 150 amu, what should be its molecular formula
In computing the heat given off by a reaction in a calorimeter you must account for heat absorbed by. Explain which of the following state functions are extensive
Calculate the concentration of Ca2 at V = 1/2 Ve? Calculate the concentration of Ca2 at V = Ve.? Calculate the concentration of Ca2 at V = 1.1 Ve.?
Question- A salt, MY, crystallizes in CsCl structure, a body-centered cubic structure with a Y- anion at each cube corner and an M+ cation at the cube center. Assuming that the Y- anions touch each other and the M+ cation at the center, and the ra..
How many moles of oxygen will be produced if 27.6 grams of Al are produced?
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