Answer:
If the volume of a container is decreased, the temperature decreases, which means that the volume of a gas is directly proportional to its temperature
Answer: True
Explanation:
Tissues perform functions that are specializations of the normal function of individual cells.
Answer:
Incomplete exercise: isolated 0.169 g of eugenol from 5.09 g of cloves
The answer is:
The theoretical mass of eugenol is 0.8653 g and the percent recovery is 19.53%
Explanation:
The theoritical mass is equal to:
![TY=0.17*5.09=0.8653g](https://tex.z-dn.net/?f=TY%3D0.17%2A5.09%3D0.8653g)
The percent recovery is:
%
Answer : The time taken for the reaction is, 28 s.
Explanation :
Expression for rate law for first order kinetics is given by :
![k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}](https://tex.z-dn.net/?f=k%3D%5Cfrac%7B2.303%7D%7Bt%7D%5Clog%5Cfrac%7B%5BA_o%5D%7D%7B%5BA%5D%7D)
where,
k = rate constant = 0.0632
t = time taken for the process = ?
= initial amount or concentration of the reactant = 1.28 M
= amount or concentration left time 't' = ![1.28\times \frac{17}{100}=0.2176M](https://tex.z-dn.net/?f=1.28%5Ctimes%20%5Cfrac%7B17%7D%7B100%7D%3D0.2176M)
Now put all the given values in above equation, we get:
![0.0632=\frac{2.303}{t}\log\frac{1.28}{0.2176}](https://tex.z-dn.net/?f=0.0632%3D%5Cfrac%7B2.303%7D%7Bt%7D%5Clog%5Cfrac%7B1.28%7D%7B0.2176%7D)
![t=28s](https://tex.z-dn.net/?f=t%3D28s)
Therefore, the time taken for the reaction is, 28 s.
Answer:
Wood consists mainly of organic substances (99% of the total mass). Elemental chemical composition of wood of different breeds is practically the same. Absolutely dry wood on average contains 49% of carbon, 44% of oxygen, 6% of hydrogen, 0.1-0.3% of nitrogen. When burning wood remains its inorganic part - ash.
So the answer is flammability because wood is flammable.