5. The extinction coefficient determined above was for the mixture of Kool-Aid, which contains red dye 40, preservatives and flavoring agents. The actual extinction coefficient for Red 40, which causes most of the absorption, is 2.7 x 104 Lmol-1cm-1 around 500nm. Determine the concentration of red dye in the stock solution. This calculation requires you to determine the concentration of test tube 1 (the working solution) and then use the dilution factor to convert this concentration to that of the stock solution.

Consider the two electron arrangements for neutral atoms a and b. are atoms a and b the same element? a - 1s2, 2s2, 2p6, 3s1 b - 1s2, 2s2, 2p6, 5s1

The ozone molecule o3 has a permanent dipole moment of 1.8×10−30 cm. although the molecule is very slightly bent-which is why it has a dipole moment-it can be modeled as a uniform rod of length 2.5×10−10 m with the dipole moment perpendicular to the axis of the rod. suppose an ozone molecule is in a 8000 n/c uniform electric field. in equilibrium, the dipole moment is aligned with the electric field. but if the molecule is rotated by a small angle and released, it will oscillate back and forth in simple harmonic motion.what is the frequency f of oscillation?

Why is it incorrect to balance a chemical equation by changing the subscripts? explain.