G11S students calculating the %yield of their experimental work and the %purity of their sample #sources_of_error #proficiency_in_lab_work@Samar_Baba1 @Hhhsinfo @jana_abuorm pic.twitter.com/qwZmXnkRMP
— Maha Shebly (@mahaperla) October 12, 2021
14
October
