Given the speed, you will travel 195km in 3 hours.
65 x 3 = 195
The electron structures of boron and aluminum are similar because they share the same group, therefore they have the same amount of valence electron.
C) Weathering can be chemical or physical; deposition
is only chemical
Density (p) = Mass / volume
P=295/15.625
=18.88
therefore p=18.88
We consider the given reaction H2SO4 + 2 NaOH -> Na2SO4 + 2H2O as applies to an acid-base titration.
moles NaOH = c · V = 0.2767 mmol/mL · 25.34 mL = 7.011578 mmol
moles H2SO4 = 7.011578 mmol NaOH · 1 mmol H2SO4 / 2 mmol NaOH
= 3.505789 mmol
Hence
[H2SO4]= n/V = 3.505789 mmol / 39.54 mL = 0.08866 M
The answer to this question is [H2SO4] = 0.08866 M
