# Diagram of a half-life graph?

if they give you a diagram of half life, it is very hard to find the answer. unfortunatly my test is about that adn I don't know how to do it. please help me? i'm not dissappointed yet,

### What is the difference between a graph and a diagram?

The difference between graph and diagram :- Diagram 1) Diagram can be drawn on plain paper and any sort of paper. 2) Diagram is more effective and impressive. 3) Diagram have everlasting effect. 4) Diagram cannot be used as median, mode etc. 5) Diagram can be represented as an approximate idea. Graph 1) Graph can be drawn only on plain paper. 2) Graph is not more effective and impressive. 3) Graph don't have everlasting effect…

### Where is Hertzsprung Russelll diagram found?

You can read a description, and find a typical graph, here: http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram "The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral types or classifications and effective temperatures. ..." You can read a description, and find a typical graph, here: http://en.wikipedia.org/wiki/Hertzsprung-Russel_diagram "The Hertzsprung-Russell diagram is a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosity versus their spectral…

### Definition of ogive diagram?

An ogive is a type of graph that is used to represent the cumulative frequencies for the classes in a frequency distribution. This type of graph can also be known as a cumulative frequency graph. The cumulative frequency is the sum of the frequencies accumulated up to the upper boundary of a class in the distribution.

### How do you know if an enthalpy change diagram is endothermic or exothermic?

If you plot the reaction coordinate (what I think you mean by "enthalpy change diagram"), the reaction will be exothermic if the products are lower on the graph than the reactants. If they are higher than it is endothermic. For instance, if you go to the linked Wikipedia page (link to the left of this answer), the graph shown is of an exothermic reaction.