What is the difference between emission and absorption
Does a chemical reaction occur when a metal ion is placed in a flame and a color occurs? Explain. What is the difference between emission and absorption in spectroscopy?
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In Meters What is the distance of closest approach of the two particles? (Assume that the gold nucleus remains stationary and that it may be treated as a point charge. The atomic number of gold is 79, and an alpha particle is a helium nucleus cons
In a test tube containing a precipitate ofPb(OH)2 in water, will the ions from the salt havea reasonable concentration? Explain.
Streptomycin, an antibiotic, is produced on a large scale in theUnited States. Develop an equation to determine the ratio of streptomycin solution to total solution.
A hydraulic lift system can hold up t o 400,000 N (80,000 lbs). The maximum pressure in the system is 8,000,000 Pa (1200 psi). what is the minimum cross section area of the piston used to lift the truck?
The aim of this exercise is to show that -1<=p(X,Y)<=1 for any pair (X,Y) of random variables, where p(X,Y) is the correlation coefficient. Express f(t)=var(X+tY)=at^2+bt+c using the bilinearity of covariance
Suppose you want to do a physiological experiment that calls for apH 6.5 buffer. You find that the organism with which you areworking is not sensitive to the weak acid H2X(Ka1=2 x 10-2 and Ka2=5.0 x10-7) or its sodium salts.
A test charge of 3.10 µC is placed 6.10 cm away from a large flat uniformly charged nonconducting surface. The force on the charge is 290 N. The charge is now moved to 4.10 cm away from the surface. What is the force on the test charge now?
Heights of men on a baseball team have a bell shaped distribution with a mean of 183 cm and a standard deviation of 5 cm. Using the Empirical rule, what is the approximate percentage of the men between the following values?
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Problem: According to Jonathan Haidt, which of the two moral foundations do liberals emphasize above all the others?
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Do you think the increasing role of agencies in daily life improves the efficiency of government, or does it create unnecessary complexity?