Hydrogen .When acids touches all metal hydrogen gas is emitted .Strong acids is one that can produce a high concentration of hydrogen ions.Hope this helped!
Answer:
Area = 20 m²
Explanation:
Given the following data;
Force = 2500 N
Pressure = 125 Pa
To find the area on which it rest;
Mathematically, pressure is given by the formula;

Making area the subject of formula, we have;

Substituting into the formula, we have;

Area = 20 m²
Every object will remain at rest
Multiply these numbers and there’s your answer