Rust is caused when there is a redox reaction of iron and oxygen in the existence of water or air moisture. For the metal to be weakened by rust, the oxygen atoms needs to be mixed with metallic atoms to form the oxygen compound.
Answer:
To separate salt, sawdust, and iron, use a magnet to separate the iron. Then, add water to dissolve the salt and float the sawdust. Skim off, sieve, or filter the solution to separate the sawdust.
Answer: 100 feet
Explanation:
Bridges, Viaducts or Tunnels - You may not move to the left side of the road to pass when your view is obstructed within 100 feet
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Available housing and birth rate. Hope that helps :)
