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| E23.1511 |
| Sample Set of Metal & Alloys Set of 15 |
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| E23.1140 |
| Molecular Structure Demo. (P2O5) |
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| E23.1138 |
| Molecular Structure Demo. Oxygen (O2) |
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| E23.1137 |
| Molecular Structure Demo. Hydrogen (H2) |
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| E23.1136 |
| Molecular Structure Demo. Ammonia (NH3) |
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| E23.1135 |
| Molecular Structure Demo. (H2O2) |
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| E23.1134 |
| Molecular Structure Demo. Water (H2O) |
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| E23.1133 |
| Molecular Structure Demo. Iron (Fe) |
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| E23.1132 |
| Molecular Structure Demo. Potassium (K) |
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| E23.1131 |
| Molecular Structure Demo. Natrium (Na) |
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| E23.1130 |
| Molecular Structure Demo. Magnesium (Mg) |
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| E23.1129 |
| Molecular Structure Demo. Cooper |
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| E23.1124 |
| Molecular Structure Demo. Rutile |
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| E23.1510 |
| Sample Set of Simple Substances |
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| E23.1509 |
| Glass & Raw Material for Its Producing |
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| E23.1508 |
| Sample Set of Petroleum & Product from Processing |
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| E23.1507 |
| Sample Set of Coal & Product from Processing |
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| E23.1504 |
| Sample Set of Metal & Their Alloys |
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| E23.1122 |
| π/δ Key in Ethine Molecular Demo. |
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| E23.1121 |
| π/δ Key in Ethene Molecular Demo. |
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| E23.1120 |
| Molecular Structure Demo. Methane |
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| E23.1118 |
| Molecular Structure Demo. Wurtzite |
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| E23.1117 |
| Molecular Structure Demo. Blende |
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| E23.1112 |
| Molecular Structure Demo. Graphite |
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| E23.1111 |
| Molecular Structure Demo. Diamond |
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| E23.1105 |
| Molecular Structure Demo. Copper |
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| E23.1103 |
| Molecular Structure Demo. Metal Crystal |
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