Hydrochloric acid, magnesium metal and universal indicator solution are added to a beaker.
Observations were made: A gas was produced, the beaker got hot, the metal dissolved and the color
changed from red (highly acidic) to yellow (slightly acidic). Based on these observation, what do you think happened, and what was responsible for each different observation.

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

i think its 100.

hope this !

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101