. The concentration of drug X in aqueous solution drops by 10% per month when stored at room temperature. If the
degradation occurs by first order, what concentration will
remain if a 5 mg/ml solution of the drug is stored under the
same conditions for 3 months?

Which statement is true if the refractive index of medium a is greater than that of medium b? a. total internal reflection is possible when light travels from air to medium b to medium a. b. total internal reflection is possible when light travels from medium a to medium b. c. total internal reflection is possible when light travels from medium b to medium a. d. total internal reflection is possible when light travels from air to medium a. e. total internal reflection is possible when light travels from air to medium b.

Awhite-blue star is hotter than a red star. select the best answer from the choices provided true or false

3. which is not a primary color of light? blue red green yellow