31, 31, 40. An atom of _31^71Ga has 31 electrons, 31 protons, and
40 neutrons.
The atomic number is 31, so the atom has<em> </em>31 protons (+).
If the atom is neutral, it must contain 31 electrons (-).
Mass number = protons + neutrons or
A = p + n
71 = 31 + n
n = 71- 31 = 40 neutrons
Chemical change because your changing one form to another
Explanation:
Structural formula of propene
molecular formula = C₃H₆
molecular mass = 12×3+1×6 = 36+6 = 42
no. of double bond = 1
Answer: I Think It's D) The change of solubility with temperature is the same for all substances.