Chemistry, 14.09.2019 11:10, alex281485
Adark-adapted human eye at the peak of its sensitivity (510 nm) can perceive a flash when 3.5 x 1015 j of energy enter the iris. how many photons is this? (in fact only 10% of these are absorbed by the retina.)
Answers: 3
Chemistry, 22.06.2019 06:30, darrriannn7241
What is the correct lewis structure for chloroform chcl3
Answers: 1
Chemistry, 22.06.2019 17:00, brownvester44
Astable electron arrangement for an atom is one that does not easily change. how is this arrangement arrived at? a. valence electrons are transferred or shared to create a full outer shell of electrons. b. valence electrons are discarded into space to create a full outer shell of electrons. c. protons (positive charge) pair with valence electrons (negative charge) to create a strong bond. d. outer shells with valence electrons are transferred or shared.
Answers: 2
Chemistry, 22.06.2019 18:00, rodriguezscarlet1713
Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?
Answers: 2
Adark-adapted human eye at the peak of its sensitivity (510 nm) can perceive a flash when 3.5 x 1015...
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