Answer:
physical properties of gases, that is, pressure, volume, temperature, and amount of gas
Gold has 79 protons on the periodic table
<em>Explanation:</em>
<em>safety precautions to be taken when performing diluting concentrated sulphuric acid with water</em>
- Using gloves while diluting to avoid injury from hot sulfuric acid to hands.
- Wearing safety glasses to protect eyes
- Must wear lab coat before performing any chemistry practical
- Safety boots to protect your legs.

Answer:
Which scientist developed the first model of the atom that showed the structure of the inside of an atom
Ernest Rutherford