Anzahl Atome in einem Kilogramm
About points...
We associate a certain number of points with each exercise.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
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.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
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 -
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 -
Question
Solution
Short
Video
\(\LaTeX\)
Need help? Yes, please!
The following quantities appear in the problem:
Masse \(m\) / molare Masse \(M\) / Stoffmenge \(n\) /
The following formulas must be used to solve the exercise:
\(m = nM \quad \)
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Exercise:
Berechne die Atommasse und die Anzahl Atome in einem Kilogramm für multicols abcliste abc Wasserstoff isotopeH abc Sauerstoff isotopeO abc Kohlenstoff isotopeC abc Uran isotopeU abcliste multicols
Solution:
Die Atommasse berechnet man über die relative Atommasse A_r der Elemente die man dem Periodensystem der Elemente entnehmen kann. Für Wasserstoff ist das beispielsweise A_risotopeHnumpr.. Dann berechnet man die Masse gemäss m_isotopeAZX A_r pqu A_r pq.kg . Wenn das die Masse eines Atoms ist dann ist die Anzahl Atome in einem Kilogramm n_isotopeAZX fracpqkgm_isotopeAZX . Folg sind für alle Isotope die beiden Resultate aufgelistet -- berechnet mit den beiden obigen Formeln. abcliste abc m_isotopeH numpr. pqu approx pq.kg n_isotopeH pq.eAtome abc m_isotopeO numpr. pqu approx pq.kg n_isotopeO pq.eAtome abc m_isotopeC numpr. pqu approx pq.kg n_isotopeC pq.eAtome abc m_isotopeU numpr. pqu approx pq.kg n_isotopeU pq.eAtome abcliste
Berechne die Atommasse und die Anzahl Atome in einem Kilogramm für multicols abcliste abc Wasserstoff isotopeH abc Sauerstoff isotopeO abc Kohlenstoff isotopeC abc Uran isotopeU abcliste multicols
Solution:
Die Atommasse berechnet man über die relative Atommasse A_r der Elemente die man dem Periodensystem der Elemente entnehmen kann. Für Wasserstoff ist das beispielsweise A_risotopeHnumpr.. Dann berechnet man die Masse gemäss m_isotopeAZX A_r pqu A_r pq.kg . Wenn das die Masse eines Atoms ist dann ist die Anzahl Atome in einem Kilogramm n_isotopeAZX fracpqkgm_isotopeAZX . Folg sind für alle Isotope die beiden Resultate aufgelistet -- berechnet mit den beiden obigen Formeln. abcliste abc m_isotopeH numpr. pqu approx pq.kg n_isotopeH pq.eAtome abc m_isotopeO numpr. pqu approx pq.kg n_isotopeO pq.eAtome abc m_isotopeC numpr. pqu approx pq.kg n_isotopeC pq.eAtome abc m_isotopeU numpr. pqu approx pq.kg n_isotopeU pq.eAtome abcliste
Meta Information
Exercise:
Berechne die Atommasse und die Anzahl Atome in einem Kilogramm für multicols abcliste abc Wasserstoff isotopeH abc Sauerstoff isotopeO abc Kohlenstoff isotopeC abc Uran isotopeU abcliste multicols
Solution:
Die Atommasse berechnet man über die relative Atommasse A_r der Elemente die man dem Periodensystem der Elemente entnehmen kann. Für Wasserstoff ist das beispielsweise A_risotopeHnumpr.. Dann berechnet man die Masse gemäss m_isotopeAZX A_r pqu A_r pq.kg . Wenn das die Masse eines Atoms ist dann ist die Anzahl Atome in einem Kilogramm n_isotopeAZX fracpqkgm_isotopeAZX . Folg sind für alle Isotope die beiden Resultate aufgelistet -- berechnet mit den beiden obigen Formeln. abcliste abc m_isotopeH numpr. pqu approx pq.kg n_isotopeH pq.eAtome abc m_isotopeO numpr. pqu approx pq.kg n_isotopeO pq.eAtome abc m_isotopeC numpr. pqu approx pq.kg n_isotopeC pq.eAtome abc m_isotopeU numpr. pqu approx pq.kg n_isotopeU pq.eAtome abcliste
Berechne die Atommasse und die Anzahl Atome in einem Kilogramm für multicols abcliste abc Wasserstoff isotopeH abc Sauerstoff isotopeO abc Kohlenstoff isotopeC abc Uran isotopeU abcliste multicols
Solution:
Die Atommasse berechnet man über die relative Atommasse A_r der Elemente die man dem Periodensystem der Elemente entnehmen kann. Für Wasserstoff ist das beispielsweise A_risotopeHnumpr.. Dann berechnet man die Masse gemäss m_isotopeAZX A_r pqu A_r pq.kg . Wenn das die Masse eines Atoms ist dann ist die Anzahl Atome in einem Kilogramm n_isotopeAZX fracpqkgm_isotopeAZX . Folg sind für alle Isotope die beiden Resultate aufgelistet -- berechnet mit den beiden obigen Formeln. abcliste abc m_isotopeH numpr. pqu approx pq.kg n_isotopeH pq.eAtome abc m_isotopeO numpr. pqu approx pq.kg n_isotopeO pq.eAtome abc m_isotopeC numpr. pqu approx pq.kg n_isotopeC pq.eAtome abc m_isotopeU numpr. pqu approx pq.kg n_isotopeU pq.eAtome abcliste
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