Chemistry, 17.07.2019 06:10 calthecrystal
A3.31 × 10-4 m solution of a new drug (273 g•mol-1) has an absorbance of 0.750 in a 1.00-cm cell. a 0.3122 g tablet containing the drug is dissolved in water to a final volume of 500.0 ml, and has an absorbance of 0.654 under the same conditions. what is the mass percent of the drug in the tablet?
a) 87.4
b) 56.9
c) 18.9
d) 12.6
Answers: 3
Chemistry, 22.06.2019 15:10, kolbehoneyman
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?
Answers: 2
Chemistry, 22.06.2019 23:00, aly02
Need asap question 1 minerals are organic compounds. true false question 2 what vitamin can be found in foods like oranges, grapefruits, and broccoli? a. vitamin a b. vitamin k c. vitamin c d. vitamin d question 3 what are minerals? a. chemical elements that are needed for body processes. b. organic compounds that the body needs in small amounts to function properly. c. small molecules used to build proteins. d. an organic compound that is insoluble in water and includes fats. question 4 how many types of vitamins does the human body need? a. 15 b. 11 c. 13 d. 17 question 5 vitamins are a good source of energy. true false
Answers: 1
A3.31 × 10-4 m solution of a new drug (273 g•mol-1) has an absorbance of 0.750 in a 1.00-cm cell. a...
Mathematics, 15.01.2020 17:31
Mathematics, 15.01.2020 17:31