The awnser for this should be h
A two carbon chain attached to a benzene ring: ethylbenzene
The oxidation number of a pure element is zero.
Answer:
B. During the light reactions of photosynthesis, water is split, removing electrons and protons, and oxygen gas is released.
Explanation:
In Photosynthesis two phases occurs. They are grouped into light dependent and light independent phase (dark phase) reactions. In the light dependent phase, sunlight is trapped by chlorophyll and water is split into its components ( oxygen, hydrogen ions and free electrons; photolysis). Part of the electrons and the hydrogen ions are picked up by NADP (Nicotinamide adenine dinucleotide phosphate) converting it to NADPH and part of the electrons are used to replenished the photosystems trapping the sunlight.
The correct statement is in statement 4. The two solid carbons has different properties and different crystal structures. The way the carbons are arranged differs for the two which cause the distinct properties of the two. In a diamond, atoms are arranged tetrahedrally while, in graphite, the atoms are arranged in an infinite array but are layered.
