Answer:
The minimum energy required to eject an electron from sodium will be bigger.
Explanation:
red light has a higher wavelength, that mean that the energy that emitted is lower in comparison with the violet light.
If the rate of the photons is the same, 10,000 photons per second, that means that the required energy to take an electron need to be bigger to have the same effect.
Hope this info is useful.
Hey there!:
Molar mass Ca(NO2)2 = 132.089 g/mol
Mass of solute = 120 g
Number of moles:
n = mass of solute / molar mass
n = 120 / 132.089
n = 0.0009084 moles of Ca(NO2)2
Volume in liters of solution :
240 mL / 1000 => 0.24 L
Therefore:
Molarity = number of moles / volume of solution
Molarity = 0.0009084 / 0.24
Molarity = 0.003785 M
Hope that helps!
Answer:
P2I4 is otherwise known as "<em>Diphosphorus Tetraiodide</em>"
Formula of Molarity =
Molarity = no. of moles /volume of solution in L
Given, 0.45M= no. of moles/0.750L
Therefore, no. of moles = 0.45M x 0.750L= 0.3375
