Chemistry, 07.09.2020 06:01, liamgreene90
A biologist has crushed flowers and created an extract of plant materials in ethyl alcohol. The mixture contains pigments such as chlorophyll A and B, carotene, and xanthophylls. In your own words, explain how this extract meets the definition of a chemical mixture. Is this mixture homogeneous or heterogeneous? How do you know? How can we separate the plant pigments from one another?
Answers: 2
Chemistry, 22.06.2019 11:00, hannah5143
The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.
Answers: 2
Chemistry, 23.06.2019 01:00, akluke6059
Which statement characterizes synthetic polymers? a. they come from animals and plants. b. they are found in nature. c. they are made in a lab. d. they are components of starch.
Answers: 1
Chemistry, 23.06.2019 03:00, kuehlthau03
Describe the properties of sodium, chlorine, and sodium chloride
Answers: 1
Chemistry, 23.06.2019 09:00, AdoNice
A2-kg bowling ball is 1 meter off the ground on a post when it falls. just before it reaches the ground, its traveling 4.4 m/s. assuming that there is no air resistant, which statement is true a. the initial potential energy is less then the final kinetic energy b. the mechanical energy is not conserved c. the mechanical energy is conserved d. the initial potential energy is greater than the final kinetic energy
Answers: 3
A biologist has crushed flowers and created an extract of plant materials in ethyl alcohol. The mixt...
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