Frequency = speed of light/ wavelength of photon. wavelength = speed of light/frequency = 3 x 10^8 / 2.43 x 10^8= 1.23m
Renewable energy (solar, wind, water, hydro, tidal and wave, geothermal, ocean thermal, biomass and biofuel) does not contribute carbon dioxide (CO2) emissions to the atmosphere, unlike fossil fuels (coal, oil and natural gas).
Answer:
155g
Explanation:
To solve this problem, we have to derive the number of moles of the element given from the number of atoms first.
Number of atoms = 3.01 x 10²⁴ atoms
From mole concept;
6.02 x 10²³ atoms is found in 1 mole of a substance
3.01 x 10²⁴ atoms of P will contain = 5moles of P
Now;
Mass of P = number of moles x molar mass
Molar mass of P = 31g/mol
Mass of P = 5 x 31 = 155g