Which molecule is an alkene?

a. 2-methylhexane
b. 3-octyne
c. octane
d. cis-2-pentene

Alidded glass container is filled with a colored gas. after a period of time, it is observed that the gas is uniformly spread throughout the box and that the movement has slowed considerably. next, a warm iron plate is carefully placed under the box. why is there resumed movement of the gas in the container?

What extra step distinguishes fermentation from glycolysis

Amatch has about 21 milligrams of red phosphorus coating the tip. how many atoms of phosphorus is this?