<span>First, obtain an ample amount of water, two clean containers, a stirring rod and a porous material for filtering. Next, place the water in the first container and heat the water until it boils. Then add the crude sugar to the boiling water and remove the mixture from heat. While still hot, pour the mixture through the filter into the second container, to remove sediments. Allow the filtered mixture to cool, and sugar crystals will form in the container. The recrystallization will occur more quickly if you add a seeding agent, like a small amount of refined sugar, to the cool mixture, but it is not necessary.</span>
If one is dilute, there is more water than substance dissolved in it. If it is concentrated, it has dissolved the maximum amount of the solvent dissolved in it.
Eleanor wants to show her class a comparison of melting
rates between two different solids when heat is applied. A graph would be more
suitable than a table to show her data because the she can see the trend line
of the effects of melting than the table.
The answer is 1. CO. A gram-molecular mass is defined as mass in grams numerically equal to the molecular weight of a substance or the sum of all the atomic masses in its molecular formula. Since CO2 and CO has both carbon and oxygen, the gram-molecular mass does not change. For a compound with carbon and oxygen, the molecular mass comes respectively from 12 (atomic mass of carbon) + (2 × 16) (atomic mass of oxygen), which is 44 g.
CH
3
C≡CH
2mole
HCl
A
CH
3
C(Cl)
2
CH
3
Heat
aq.KOH
B
CH
3
COCH
3
