A solution of a specific vitamin has λmax = 273 nm and a concentration of 8.33 * 10-7 m. the absorbance of the solution at 273 nm is a = 0.180. what is the molar absorptivity of the vitamin at 273 nm? (sample pathlength = 1.00 cm)

Acids feel slick or soapy and usually have a bitter taste. True or False

What's a certain indicator that a molecule is polar? the molecule has a nonpolar covalent bond and the dipole is cancelled due to symmetrical arrangement of atoms the molecule has a polar covalent bond and the dipole is cancelled due to symmetrical

If all other conditions are held constant when the temperature of a reaction system increases reaction rate A. Increases B. Decreases C. Is not affected by temperature

How is ice-cream melting a physical change?

The ksp of calcium carbonate, caco3, is 3.36 * 10-9 m2. calculate the solubility of this compound in g/l.

How can we tell when something is polar or non-polar in an Inter-molecular Force?

A reaction is most likely to occur when reactant particles collide with

A student has a solution with a pH of 7. The student adds HF, hydrogen floride, to the solution, hoping to increases the pH of the solution. What is wrong with this student's approach? Select one: A. You cannot change the pH of a solution. B.

What is more likely to happen if wetlands are drained?

A) If you weigh a hydrated compound before and after heating it. Do you expect the mass to be more or less than before heating? Explain why. b) How about if you weigh a bag of popcorn before and after heating it.