Want to see another example why #CASIO fx-991DEX is better than 991EX? Check this chemistry nightmare:
📖 10 P2I4 13 P4 128 H2O = 40 PH4I 32 H2PO4
You can balance within seconds on DEX❗AUTO TRANSLATE ON ❗
youtu.be/Xq-2ccfLtXw@CasioEdTech@CasioMaths@CasioEduFrance