D)plastic copper
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Answer:
okay so i hope this helps
Explanation:
In chemistry and physics, the atomic theory explains how our understanding of the atom has changed over time. Atoms were once thought to be the smallest pieces of matter. However, it is now known that atoms are made up of protons, neutrons, and electrons. These subatomic particles are made up of quarks.
Answer:
2.43 moles of water are require.
Explanation:
Number of moles of water required = ?
Number of moles of NO₂ available = 7.30 mol
Solution:
Chemical equation:
3NO₂ + H₂O → NO + 2HNO₃
now we will compare the moles of NO₂ with H₂O.
NO₂ : H₂O
3 : 1
7.30 : 1/3×7.30 = 2.43 mol
Answer : The photon energy of this light in units of nanometers, (nm) is, 
Solution :
Formula used :
where,
E = energy of photon = 
h = Planck's constant = 
c = speed of light = 
= wavelength = ?
Now put all the given values in the above formula, we get:
conversion used : 
Therefore, the photon energy of this light in units of nanometers, (nm) is,
