3 years ago

Which of these outcomes is conclusive evidence that mixing sugar in water is a physical change

2 answers:

8 0

Mixing water and sugar is a physical change. A physical change is just a change in the form of the substance, whereas a chemical change is when the substance itself changes… chemically. An easy way to figure out which is which is trying to "undo" the change. If it can be undone, it is physical.

stiks02 [169]3 years ago

5 0

If to evaporate water, there will be a sugar.

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balu736 [363]

The formula is m = D x V
D = 13.69 g/cm^3.
V = 15.0 cm^3
the mass of the liquid mercury is m= 13.69 g/cm^3 x 15.0 cm^3 = 195g
the molar mass of Hg is 200,
1 mole of Hg = 200g Hg, so #mole of Hg= 195 / 200 = 0.97 mol
but we know that
1 mole = 6.022 E23 atoms
0.97 mole=?

6.022 E23 atoms x 0.97 / 1 mole = 5.84 E23 atoms

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