100°C is 273 kelvins.
1°C is 2.73 kelvins.
I guess the closest would be north pole
Answer:
Q.89
Alkane - CnH(2n+2)
given that 8 H = > 8= 2n+2
therefore n= 3
C3H8 = 12×3 + 8×1= 36 +8 = 44
Answer:
pH=11.
Explanation:
Hello!
In this case, since the data is not given, it is possible to use a similar problem like:
"An analytical chemist is titrating 185.0 mL of a 0.7500 M solution of ethylamine(C2HNH2) with a 0.4800 M solution of HNO3.ThepK,of ethylamine is 3.19. Calculate the pH of the base solution after the chemist has added 114.4 mL of the HNO3 solution to it"
Thus, for the reaction:
Tt is possible to compute the remaining moles of ethylamine via the following subtraction:
Thus, the concentration of ethylamine in solution is:
Now, we can also infer that some salt is formed, and has the following concentration:
Therefore, we can use the Henderson-Hasselbach equation to compute the resulting pOH first:
Finally, the pH turns out to be:
NOTE: keep in mind that if you have different values, you can just change them and follow the very same process here.
Best regards!
Explanation:
Number of oxygen molecules = 10 billion =
Number of hydrogen molecules = 10 billion =
Number of molecules of hydrogen peroxides = 10 billion =
Moles of oxygen gas :
Moles of hydrogen gas :
Moles of hydrogen gas :
Number of moles in hydrogen gas, oxygen gas and hydrogen peroxide is same.
Total number of atoms in molecules of oxygen:
(2 atoms in 1 molecule)
Total number of atoms in molecules of hydroegn :
(2 atoms in 1 molecule)
Total number of atoms in molecules of hydrogen peroxide:
(4 atoms in 1 molecule)
Number of oxygen atoms and number of hydrogen atoms are equal but individually they are not equal to number of atoms in hydrogen peroxide.