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Masse an Sauerstoff in Flasche

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When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
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That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.

About difficulty...

We associate a certain difficulty with each exercise.
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.

That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:

Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise

Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise

Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise

Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise

Level 5 -
Level 6 -

Exercise

https://texercises.com/exercise/masse-an-sauerstoff-in-flasche/

Question

Solution

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The following quantities appear in the problem: Masse \(m\) / Temperatur \(T\) / Volumen \(V\) / Druck \(p\) / molare Masse \(M\) / Stoffmenge \(n\) / Anzahl \(N\) /

The following formulas must be used to solve the exercise: \(M = \sum N_i \cdot M_i \quad \) \(m = nM \quad \) \(pV = nRT \quad \)

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Exercise:
Eine leere zylinderförmige Flasche mit mm Innurchmesser und cm Innenhöhe werde bei bar und celsius mit Sauerstoff ceO gefüllt. Wie viel Sauerstoff Masse befindet sich dann in der Flasche?

Solution:
newqtydomm newqtyddon m newqtyhocm newqtyhhon m newqtypobar newqtyppon ePa newqtyTocelsius newqtyT.K newqtyM.kilogrampermole % Geg d do d h ho h p po p T To T ceO rightarrow M M % GesMassem sikg % Das Innenvolumen der Flasche beträgt solqtyVfracpi d^hpi*dn***hn/cubicmeter al V Vf fracpiqtyd^h V. Beim angegebenen Druck befinden sich damit solqtynfracpi d^ hpRTpn*Vn/ncRn*Tnmol al n fracpVRT nf fracpVncRT n ceO-Moleküle in der Flasche. Diese haben eine Masse von solqtymfracpi M d^ hpRTMn*nnkg al m n M mf nM m. % m mf mII

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Contained in these collections:

Gasgleichung 1 Situation by TeXercises

14 | 39

Asked Quantity: Masse \(m\) in Kilogramm \(\rm kg\)

Attributes & Decorations

Branches	Gas Laws
Tags	atomismus, druck, flasche, gasgleichung, sauerstoff, stoffmenge, universelle gasgleichung, volumen
Content image
Difficulty	(3, default)
Points	3 (default)
Language	(Deutsch)
Type	Calculative / Quantity
Creator	pw
Decoration
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