the law of conservation of energy states that energy cannot be created or destroued , but it can be transformed from one form to another.
hope this u : ))
the energy carried by a photon is equal to
(planck's konstant) times (the frequency of the photon) .
planck's konstant is 6.626 x 10⁻³⁴ m²-kg/s (rounded)
the answer would be ~ 3.58explanation
you will need to use the simple formula of finding the number of moles, given the mass of the compound, which is:
number of moles of compound = mass of compound / mr of compound
the mass in this equation is the mass of the compound you have/ are considering.
the mr is the sum of the atomic masses of each element in the compound.
to proceed with this, you need to have two of the following values:
mass : 340g
mr of mgcl2 : 95
number of moles : ?
substituting the respective values in the equation:
number of moles = mass / mr
number of moles = 340 / 95
number of moles = 3.58
hope this !