I think it’s either 1 or 2 !!
<span>The chemical mixture that composes our atmosphere is called Synopt.</span>
<span>Total mass = 3.64 + 2.87 + 4.13 = 10.64 g
Mass percent of NH4Cl = (mass of NH4Cl/ Total mass) x 100 = (2.87 g/10.64g) x 100 = 27.0 % mass of NH4Cl</span>
Radiation is a bad chemical it can cause death