Answer:
C
Explanation:
The airplanes speed would decrease
Answer:
chemical change
Explanation:
because physical is like if something is happening inside your body
BTW
I hope this helps
Answer:
![V_{HCl}=80mL](https://tex.z-dn.net/?f=V_%7BHCl%7D%3D80mL)
Explanation:
Hello,
In this case, for the given reactants we identify the following chemical reaction:
![KOH+HCl\rightarrow KCl+H_2O](https://tex.z-dn.net/?f=KOH%2BHCl%5Crightarrow%20KCl%2BH_2O)
Thus, we evidence a 1:1 molar ratio between KOH and HCl, therefore, for the complete neutralization we have equal number of moles, that in terms of molarities and volumes become:
![n_{HCl}=n_{KOH}\\\\M_{HCl}V_{HCl}=M_{KOH}V_{KOH}](https://tex.z-dn.net/?f=n_%7BHCl%7D%3Dn_%7BKOH%7D%5C%5C%5C%5CM_%7BHCl%7DV_%7BHCl%7D%3DM_%7BKOH%7DV_%7BKOH%7D)
Hence, we compute the volume of HCl as shown below:
![V_{HCl}=\frac{M_{KOH}V_{KOH}}{M_{HCl}} =\frac{0.40M*40mL}{0.20M} \\\\V_{HCl}=80mL](https://tex.z-dn.net/?f=V_%7BHCl%7D%3D%5Cfrac%7BM_%7BKOH%7DV_%7BKOH%7D%7D%7BM_%7BHCl%7D%7D%20%3D%5Cfrac%7B0.40M%2A40mL%7D%7B0.20M%7D%20%5C%5C%5C%5CV_%7BHCl%7D%3D80mL)
Best regards.
Answer:
about 3
Explanation:
just did this for the points just being honiest