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djverab [1.8K]
3 years ago
7

What volume of a 0.50 m mgso4 solution will be needed to prepare 100.0 ml of a 0.20 m mgso4 solution?

Chemistry
1 answer:
enyata [817]3 years ago
7 0
The formula is given by Molarity of mgso4 required for the titration * Volume of mgso4 for the titration = Molarity of mgso4 used to make the solution * Volume of mgso4 used to make the solution. 
So we have 0.5 * Volume of mgso4 = 100 * 0.2 
So Volume of mgso4 = (100 * 0.2)/ 0.5 
Volume = 20/0.5 = 40ml = 40 * 10^(-3)
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How many molecules of water are released during the polymerization of a 20 monomer-long cellulose molecule?
Alborosie

Answer:

  • <em>During the polymerization of a 20 monomer-long cellulose molecule,</em> <u>19 molecules of water are released.</u>

<u></u>

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To have a <em>20 monomer-long cellulose molecule</em>, 20 monomers have been chemically bonded by reacting 19 times, as it is explained in the next paragrpahs, and so 19 molecules of water have been released.

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