Which of the following is true about light waves and sound waves?
A.
Sound waves and light waves travel at the same speed through different materials.

B.
Sound waves can move at different speeds, but light waves always move at the same speed.

C.
Light waves can move at different speeds, but sound waves always move at the same speed.

D.
They each travel at different speeds when moving through different materials.

It is 4.92 e-4 sorry if i am wrong

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na

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