Nicotine is a diamino compound isolated from dried tobacco leaves. Nicotine has two rings and by high-resolution mass spectrometry. Give a molecular formula for nicotine, and calculate the number of double bonds.

Explanation:

Nicotine is a type of alkaloid that has two ring structures so-called as a bicyclic compound. In this compound, one ring is a pyridine cycle and the other is a pyrrolidine cycle. The molecular formula of this compound is and this compound has three double bonds that are present in the pyridine cycle.  It is a stimulant and addictive. It is used for different purposes such as treating tobacco disorder and some other.

question: which statement best describes the different properties of metals?

answer: they are shiny and bend without breaking.

since metals have certain characteristics properties, they include the following: they are ductile, malleable, shiny, hard, lustrous, flexible and they are good conductor of heat and electricity. so therefore, metals are not dull and they are not non-flexible as listed. instead, they are shiny and flexible.

hope this , have a good day. c;

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."