Answer:
0.57 M
Explanation:
rate = change in concentration /time
Initial concentration of Cl2O5 = 1.16 M
Let the concentration of Cl2O5 after 5.70 seconds be y
rate = (1.16 - y)/5.7
The reaction follows a first order
Therefore, rate = ky = 0.184y
0.184y = (1.16 - y)/5.7
0.184y × 5.7 = 1.16 - y
1.0488y + y = 1.16
2.0488y = 1.16
y = 1.16/2.0488 = 0.57 M
Concentration of Cl2O5 after 5.70 seconds is 0.57 M
<h3><u>Answer;</u></h3>
E. Horizon
<h3><u>Explanation;</u></h3>
A map is a symbolic representation of selected characteristics of a place or a given location. It present information about the world in a simple, visual way.
Several key features must be included on a map to aid the viewer in understanding the communication of a given map. They include;
- Legend; it serves as the decoder for the symbology in the data frame.
- Scale; explains the relationship of the date frame compared to the real world.
- Tittle; It instantly gives the viewer a succinct description of the subject matter of the map.
- Compass rose or North arrow
- Data frame, and
- Citation among others.
Answer:-
If an element has 3 or more valence electrons then the element belongs to p block of the periodic table. For p block elements the group number is found out by adding the number of electrons in valence shell + 10.
The reason for this is because in the middle of the periodic table there are the d block elements ranging from group 3 to group 12 a total of 10 groups in between elements having 2 valence electrons and 3 valence electrons
A calculator .... that's the answer