Answer:
2.25?
Explanation:
Im a 7th grade and have no idea but I think the pressure Will be 2.25 ATM because 3 which is the volume after minus the 0.75 which was the first volume but I dont really know srry
Answer:-
Physical properties are those that can be measured correctly without any change in the chemical composition of a substance. The exhibited physical property can be reversed easily by changing the conditions.
Physical properties when being exhibited do not change the mass of the substance either.
When a substance is attracted to the south pole of a magnet, the chemical composition of the substance remains the same.
The mass of the substance is also unchanged.
The attraction can be stopped simply by removing the magnet or keeping the substance inside a metallic cage.
Hence attraction to the south pole of a magnet is a physical property of the substance.
Answer:
0.001341 mol/L s is the average rate from 8.0 to 20.0 seconds.
Explanation:
Average rate of the reaction =
![R_a=-\frac{\Delta [x]}{\Delta T}=-\frac{x_2-x_1}{t_2-t_1}](https://tex.z-dn.net/?f=R_a%3D-%5Cfrac%7B%5CDelta%20%5Bx%5D%7D%7B%5CDelta%20T%7D%3D-%5Cfrac%7Bx_2-x_1%7D%7Bt_2-t_1%7D)
=Average rate of the reaction during the given time interval.
![\Delta [x]](https://tex.z-dn.net/?f=%5CDelta%20%5Bx%5D)
= Change in concentration of reactant with respect to time.
= Change in time.
=Concentration of reactant at time
=Concentration of reactant at time
So, at 
the concentration of 
:
And at 
the concentration of :
The average rate of the reaction at given interval will be given as:
0.001341 mol/L s is the average rate from 8.0 to 20.0 seconds.
Ionic lattice
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An ionic compound is a giant structure of ions. The ions have a regular, repeating arrangement called an ionic lattice . The lattice is formed because the ions attract each other and form a regular pattern with oppositely charged ions next to each other..
A gas can be produced when you boil water (steam). This isn't classified as a chemical change, though. This is because a new substance is not formed, the water just changes physical states from liquid to gas
