Question

Please answer the question and I will mark brainlest please please please ​

Answer 1

Answer:

sorry but I don't know

sorry!!!!

Answer 2

Answer:

a) zero group or nobel gas

b) pepsin and renin

c)When iron loses the 2 4s electrons, it attains a valency of +2. Sometimes, iron will also lose one of the paired electrons from 3d orbital, leaving the entire 3d orbital filled with unpaired electrons (which provides a more stable configuration). In this case, its valency will be +3

d)vanadium pentoxide

e)trimethylamine

f) chemical equations

g)Mg3N2

h) mass of reactant = mass if products

because mass can neither be created nor can be destroyed(law of conservation of mass given by lavoiser)

I)CO3^-2

j)radical