Enthalpy is <span>a thermodynamic quantity equivalent to the total heat content of a system. It is equal to the internal energy of the system plus the product of pressure and volume. So don't know if this helps you...</span>
Remember that HCl is a strong acid will dissociate almost 100%
HCl + H₂O --> H₃O⁺ + Cl⁻
pH = -log[H₃O⁺]
pH = -log(0.045) = 1.35
(The rules for sig figs are that if you take the log of a number with x significant figures, then the result should have x significant decimal places.)
The pH is 1.35
The amount of molecules between them
Si un gaz exerce une pression de 2,00 atm lorsque 20 bouffées de particules sont présentes alors pour 4,50 atm il faut 45 bouffées car 20 bouffées = 2,00 atm donc 2*20=40 +0,5 =4,50
Answer:
2 eV
Explanation:
The energy of a photon of light is given by the formula
where
h is the Planck constant
c is the speed of light
is the wavelength of the photon
In this problem we have:
is the wavelength of the photon
Therefore, the energy in Joules is
We want to convert this energy into electronvolts: we know that the conversion factor is
Therefore,
