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"Metal Materials" Iron Metal Materials PPT (the application of the amount of substances in the calculation of chemical equations in the second class)

People's Education Press High School Chemistry Compulsory Course I Download: 179

"Chemical Equation" Source of Life - Water PPT Courseware 3

Cantonese Education Edition Ninth Grade Chemistry Volume 1 Download: 840

"Simple Calculations Using Chemical Equations" Chemical Equations PPT Teaching Courseware

People's Education Press Ninth Grade Chemistry Volume 1 Download: 252

"Simple Calculations Using Chemical Equations" Chemical Equations PPT (Lesson 2)

People's Education Press Ninth Grade Chemistry Volume 1 Download: 294

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