Chemistry
Chemistry, 19.10.2019 00:20, heavenwagner

For a sunscreen product with equal amounts of tdsa and 2-ehmc to provide adequate protection from uv-a and uv-b rays for 1.00 h, how many molecules of tdsa and 2-ehmc must be present on 0.45 m2 of skin? assume one molecule of tdsa and one molecule of 2-ehmc can each absorb 10,000 photons per hour. assume the photon rate is the same as in part c, 3.066×1021 photons/(m2⋅s) .

answer
Answers: 1

Other questions on the subject: Chemistry

image
Chemistry, 22.06.2019 03:30, tbeck225
If a solution is considered basic, then a) the hydroxide ion and hydronium ion concentrations are equal. b) the hydroxide ion concentration is less than the hydronium ion concentration. c) the hydronium ion concentration is greater than the hydroxide ion concentration. d) the hydroxide ion concentration is greater than the hydronium ion concentration.
Answers: 1
image
Chemistry, 22.06.2019 06:00, hdjsjfjruejchhehd
The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.
Answers: 1
image
Chemistry, 22.06.2019 16:30, jrfranckowiak
At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?
Answers: 1
image
Chemistry, 22.06.2019 22:30, th483
What relationship exists between an enzyme and a catalyst?
Answers: 1
Do you know the correct answer?
For a sunscreen product with equal amounts of tdsa and 2-ehmc to provide adequate protection from uv...

Questions in other subjects:

Konu
Mathematics, 25.10.2019 23:43
Konu
Mathematics, 25.10.2019 23:43