Answer:
Frequency = 0.8×10¹⁵ Hz
Explanation:
Given data:
Frequency of photon = ?
Wavelength of photon = 3.75 ×10⁻⁷ m
Solution:
Formula:
Speed of photon = wavelength × frequency
Frequency = speed of photon / wavelength
Now we will put the values in formula.
Frequency = 3 ×10⁸ m/s / 3.75 ×10⁻⁷ m
Frequency = 0.8×10¹⁵ s⁻¹
s⁻¹ = Hz
Frequency = 0.8×10¹⁵ Hz
Surfer
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sulphur has atomic number 16, which signifies that it has 16 electron and 16 protons and 16 neutron
Answer:
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. The scientific study of crystals and crystal formation is known as crystallography.
Explanation:
Answer:
21 molecules of oxygen.
Explanation:
The balanced equation is
2CH3CH2COOH + 7O2 -----> 6CO2 + 6H2O.
So 2 molecules of propanoic acid require 7 moles of oxygen.
Therefore 6 molecules require 7/2 * 6 = 21 molecules of oxygen.
