Answer:
6.
2AI2O3 + heat -> 4AI + 3O2
Reaction type: Combustion
7.
2AI+ 6HCl -> 3H2 + 2AlCl3
Reaction type: Single Replacement
8.
IDK
Reaction type: Double Replacement?
Explanation:
Energy of a photon = hc/λ
3.65 x 10^-19 = 6.626 x 10^-34 x 2.99 x 10^8/λ
λ = 6.626 x 10^-34 x 2.99 x 10^8 / 3.65 x 10^ -19
= 5.42 x 10^-7 m.
Hence wavelength of photon is 5.42 x 10^-7 m.
Hope this helps, have a great day/night ahead!
1) Atomic number of argon (Ar) is 18, it means that it has 18 protons and 18 electrons.
Electron configuration of argon atom: ₁₈Ar 1s² 2s² 2p⁶ 3s² 3p⁶.
2) Atomic number of chlorine (Cl) is 17, it means that it has 17 electrons and 17 protons, but if it receive one electron, it becomes anion Cl⁻ with 18 electrons.
Electron configuration of chlorine anion: ₁₇Cl⁻ 1s² 2s² 2p⁶ 3s² 3p⁶.
3) Atomic number of sulfur (S) is 16, it means that it has 16 electrons and 16 protons, but if it receive two electrons, it becomes anion S²⁻ with 18 electrons.
Electron configuration of sulfur anion: ₁₆S²⁻ 1s² 2s² 2p⁶ 3s² 3p⁶.
Yeahh you should be anyways!!
True, buoyancy is the force a fluid exerts upon an object on its surface.
