Question

Plzz tell how to combine . I want the way how to combine them!​

Answer 1

Answer:

I know a. it is co2

b.na+hcl naoh

Answer 2

Answer:

CO2

NaO2

MgH2O

FeHCL

CaH2SO4

this is your answer mark me as brainlist and follow me please and thank my answers