Alright yo, I just gave this explanation off earlier
Alright dude, Hess' law isn't as complicated as most people think
Take this example
look for the change in enthalpy of A+B-> AB
A + B -> C enthalpy=10 kJ
C -> AB enthalpy=10 kJ
now if you add everything together you come up with
A + B + C --> AB + C enthalpy= 10kJ + 10 kJ= 20kJ
But notice how C is one the left and on the right of that-- so if it's on the left and on the right of the equation, you could just cancel it out
so you get A+B--> AB
tadaaa!! You found the equation you were looking for
and you know that it's enthalpy is= 10kJ + 10kJ= 20kJ
Hope that helps ya fam!
Just pm me if you need more help!
Answer is: <span>1.0×10</span>¹⁶.<span>
</span>P (power of laser) = 3,2 mW = 0,0032 W.
λ (wavelength) = 633 nm = 633 · 10⁻⁹m = 6,33·10⁻⁷m.
P = n·h·c÷λ ⇒ n = n=P·<span>λ/h</span>·<span>c.
</span>c -<span> speed of light </span><span>3⋅10</span>⁸ <span>m/s.
h - </span><span>Planck's constant - </span><span>6.63⋅10</span>⁻³⁴J·<span>s.
n - number of photons emited.
n = 0,0032W </span>· 6,33·10⁻⁷m / 6.63⋅10⁻³⁴J·s · 3⋅10⁸ m/s
n = 1·10¹⁶ 1/s.<span>
</span>
1000 to the power 4 not so good at math but
False, compounds can be formed from chemical reactions, mixtures can not