Chemistry, 30.03.2021 01:00 squawk1738
From Earth, a hydrogen source releases an emission line that has a wavelength of 410nm. Observations have been made for the same line in the spectrum of light from a distant star. The star has a wavelength of 485nm (shifted toward the red end of the spectrum). Provide an explanation for the differences in wavelength that were observed.
Answers: 2
Chemistry, 21.06.2019 23:30, robertotugalanp1wlgs
Why do you suppose the structural polysaccharide cellulose does not contain branches? why do you suppose the structural polysaccharide cellulose does not contain branches? branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby decreasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby increasing the rigidity and strength of the microfibrils. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby increasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby decreasing the rigidity and strength of the microfibrils.
Answers: 1
Chemistry, 22.06.2019 10:10, babyphoraaaaa
For the reaction, 4 a(g) + 3 b(g) => 2 c(g), the following data were obtained at constant temperature. experiment initial[a],mol/l initial [b],mol/l initial rate, m/min 1 0.200 0.150 5.00 2 0.400 0.150 10.0 3 0.200 0.300 10.0 4 0.400 0.300 20.0 which of the following is the correct rate law for the reaction? 1. rate = k[a]2[b]2 2. rate = k[a][b] 3. rate = k[a]2[b] 4. rate = k[a][b]2
Answers: 3
Chemistry, 22.06.2019 18:00, faithabossard
Which three statements represent the benefits of performing experiments using computer simulations?
Answers: 3
Chemistry, 22.06.2019 23:00, Mynameismath
Which type of intermolecular attractions holds ammonia molecules together with other ammonia molecules?
Answers: 3
From Earth, a hydrogen source releases an emission line that has a wavelength of 410nm. Observations...
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