<span>Not to be confused with tetration.
This article is about volumetric titration. For other uses, see Titration (disambiguation).
Acid–base titration is a quantitative analysis of concentration of an unknown acid or base solution.
Titration, also known as titrimetry,[1] is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte. Since volume measurements play a key role in titration, it is also known as volumetric analysis. A reagent, called the titrant or titrator[2] is prepared as a standard solution. A known concentration and volume of titrant reacts with a solution of analyte or titrand[3] to determine concentration. The volume of titrant reacted is called titration volume</span>
Answer:
In the kinetic molecular theory, the molecules of an ideal gas are in constant random motion inside the container of the gas, and the pressure of the gas (which is the pressure exerted by the molecules in their collisions with the walls of the container) arise from this random motion of the molecules.
The main assumptions of the kinetic theory of gases are:
- The gas consists of a large number of molecules that collide between each other and the walls of the container; all these collisions are elastic
- The duration of the collisions is negligible compared to the time between the collisions
- The number of molecules is so large that statistics can be applied
- Intermolecular forces between the molecules are negligible (except during the collisions)
- The volume of the molecules is negligible compared to the volume of the container
In particular, the pressure of the gas is directly proportional to the average kinetic energy of the molecules, according to the equation:
where
p is the pressure of the gas
V is the volume of the container
K is the average kinetic energy of the molecules in the gas
We see that as the pressure is higher, the higher the kinetic energy of the particles: this means that the molecules will move faster, on average.
Therefore in this problem, the gas that exerts a pressure of 1.5 atm will have molecules moving faster than the molecules of the gas exerting a pressure of only 1.0 atm.
Answer:
Explanation:
cell is the basic smallest,functional and structural unit of an organism
Answer:
1. chemical property
2. chemical property
3. chemical change
4. physical change
5. physical property
6. chemical change
7. chemical change
8. chemical property
9. physical property
10. physical property
11. physical change
12. chemical change
13. chemical change
14. chemical change
15. true
16. true
17. false
18. true
19. false
20. true
21. chemical change
22. physical change
23. chemical change
24. chemical change
Explanation:
Like it says in the worksheet, for questions 1-14, you can tell the difference between a property and change by whether there is a verb in the description.
If the object is simply changing form (melting, freezing), it is a physical change or property. The object can be returned to the state it was in originally without much difficulty. You can freeze water and turn it into ice. You can just as easily melt the ice and turn it into water again.
If the object is actually changing its composition or a reaction is taking place (baking bread, combustion), it is a chemical change or property. It is not as easy and sometimes even impossible to change back to its original state. If you have a bike that is rusted, you cannot really do much to change it back to how it was before it got rusty.
Hope this helps! <3
