Mass of Na2CO3 = 106g/mol
1 mole of Na2CO3 ------------ 106g
x moles of Na2CO3 ------------ 2.25g
x = 0.0212 moles of Na2CO3
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mass of NaOH = 40g/mol
1 mole of NaOH ----------------- 40g
x moles of NaOH -------------------- 0.800g
x = 0.02 moles of NaOH
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mass of Na2SO4 = 142g/mol
1 mole of Na2SO4 ---------------- 142g
x moles of Na2SO4 ------------------ 17.75g
x = 0.125 moles of Na2SO4
Well, it is important to note that the measurements for absorption and transmittance are inversely related, a low absorption means the substance was not as effective in scattering and or absorbing the specific wavelength of light, I assume, and that most of the wavelength of light has passed through the substance and or has been transmitted, thus it would have a high transmittance.
Answer:
combustion
Explanation:
The enthalpy change for the complete burning of one mole of a substance
is the enthalpy of __combustion_____ .
There is no way to know which reaction requires which catalyst. However, if you apply copper to a reaction where it does act as a catalyst, the rate of reaction will be much faster as it lowers the activation energy for successful collisions.