Answer:
A average is a number expressing the central or typical value in a set of data. add up all the numbers, then divide by how many numbers there are.
Explanation:
Sucrose is insoluble in dichloromethane because dichloromethane is not a polar solvent.
Sucrose is soluble in water because the molecules of sucrose has the ability to react with the molecules of water and thereby forming hydrogen bond which enhance the dispersion of sucrose in the water.
Sugar can not react in a similar way with dichloromethane because they do not possess chemical species that can react together to form bonds. Thus, sugar is a polar substance which can not dissolve in a non-polar solvent.
Answer: Activation energy
Explanation:
https://www.google.com/search?q=minimum+energy+for+effective+collision&oq=minimum+energy+for+effective+collision&aqs=chrome..69i57j0l2j69i61.4832j1j7&sourceid=chrome&ie=UTF-8
<span>Wrap a magnet in plastic lunch wrap and move it through the mixture of the three solids. The iron filings will stick to the magnet. The filings can be removed by unwrapping the plastic from the magnet carefully! Mix the remaining salt and sand in water and stir.</span>
Answer:
1st column group 1 - group2
second column Halogen group - zero group ( inert gases )
third column - very active metals , tend to lose one electron -less reactive than group one , tend to lose 2 electrons - very active nonmetals, tend to gain one electron - Nobel gases , do not gain or lose electrons
Explanation:
