All members of the alkene series of hydrocarbons have the general formula: Select one:
a. CnH2n-2
b. CnH2n+2
C. CnHn
d. CnH2n

D: CnH2n

Explanation:

Unsaturated hydrocarbons have double and/or triple bonds between carbon atoms. Those with double bond assuming they have non-cyclic structures are called alkenes with the general formula C_nH_2n. Meanwhile the hydrocarbons that possess triple bonds are called alkynes and possess the general formula CnH2n-2.

Looking at the options, for alkenes, the correct answer is option D

answer; i believe the correct answer is (c) /// is a homogeneous mixture of gaseous substance nitrogen,oxygen and smaller amounts of other substancesmixtures can be either ( homogeneous or heterogeneous)plz check first good luck

mechanics (greek   is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

explanation: