Answer:
Demonstration
Explanation:
The volcano model is just a demonstration of how an actual volcano looks like.
This is not an experiment.
- An experiment is a part of scientific method used to obtain data for the validation of a hypothesis.
- It is a very important part of any scientific investigation.
- Here since we are not looking for an answer to a problem, we are not dealing with an experiment.
- A demonstration is just a show off or a model to mimic the real world.
Answer:
NaNO₃ > C₆H₁₂O₆ > C₁₂H₂₂O₁₁
Explanation:
Boiling-point elevation is defined as the phenomenon where boiling point of a liquid will be higher when another compound is added, meaning that a solution has a higher boiling point than a pure solvent. The formula is:
ΔT = k×m×i
Where k is ebulloscopic constant of the solvent, m is molality of solution in moles of solute per kg of solution and i is Van't Hoff factor (1 in glucose and sucrose and 2 in sodium nitrate).
Molality is proportional to moles of solute. As the solutions have the same concentration in mass, <em>the lowest molar mass of solute, the highest boiling point elevation</em>.
Molar mass of glucose is 180,2 g/mol; sucrose 342,3 g/mol and sodium nitrate 85 g/mol.
As sodium nitrate has the lowest molar mass and a Van't Hoff factor of 2, its solution will have the highest boiling point, then will be glucose (In order to its molar mass), and the lowest boiling point will be sucrose. Thus, in order of decreasing boiling point:
<em>NaNO₃ > C₆H₁₂O₆ > C₁₂H₂₂O₁₁</em>
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I hope it helps!
Because the force of gravity is pulling down on the object.
Microscale could be best bet as evaboration and other factors can come in play. otherwise contact angle measurements could have something related calculated via surface tension.
something that is possible, calculating mols via gravimetry.
finding the suitable material could be tricky as if it needs to be instant. silica gel doesn't necessarily work
adsorption vs. absorption
The percent of SO₂ in H₂SO₄ : 65.3%
<h3>Further explanation
</h3>
Proust states the Comparative Law that compounds are formed from elements with the same Mass Comparison so that compounds have a fixed composition of elements
%Mass A in AxBy =
For SO₂ in H₂SO₄ :
MW SO₂ = 32 + 2.16=64 g/mol
MW H₂SO₄ =2.1+32+4.16=98 g/mol
The percent of SO₂ :