Consider a calibration curve in which solution absorbance is plotted on the y-axis and solution concentration (M) is plotted on the x-axis. A linear regression of the calibration data yields a straight line with the formula: y= 26x + 0.081. If the absorbance of an unknown solution is 0.4428, what is the concentration of the unknown solution? a. 0.0139 M. b. 0.0181 M. c. 0.0256 M. d. 0.0321 M.

Match the name of the following compound:   mgso4  · h2omagnesium sulfate monohydratemagnesium (ii) sulfate monohydratemagnesium (ii) sulfate hydratemagnesium sulfate hydrate

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?

Abaker touches a pie right after taking it out of the oven. which statement best explains why the pie feels hot?