Hello.
<span>In a molecule, one mole of the molecule contains Avagadro's number of molecules.
So we can safely say that 0.788 moles of NaOH contain 0.788*Av. (Where Av is Avagadro's number)
And in a molecule of NaOH there are 3 atoms, so we multiply the number of molecules by 3 to obtain the number of atoms
3x0.788xAv
=3x0.788x6.02x10^23
=1.42x10^24 Atoms.
Have a nice day
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HClO4(aq) ===> H+(aq) + ClO4-(aq)
If [HClO4] = 0.175 M, then [H+] = [ClO4-] = 0.175 M
[OH-] = 0.175 M = 1.75 x 10^-1 M
Kw = [H+][OH-} = 1.00 x 10^-14 [OH-] = 1.00x10^-4/1.75x10^-1 = 5.71 x 10^-14 M
Answer:
{CH4 +2O2 ->CO2 + 2H2O}}}
Density = Mass / Volume
Input the values in their respective places and then use algebra to solve for volume.
Hope that helps.
The first one is true second is false third is False.