A.23.4g | B.30.6g | C.35.7g | D.58.5g |
35.5 |
36.5 |
35.5 |
58.5 |
A. | B. | C. | D. |
A.水结成冰前后,质量保持不变 |
B.1.2g碳与3.2g氧气完全反应,可生成4.4g二氧化碳 |
C.100ml水和100ml乙醇混合后总体积小于200ml |
D.在100g过氧化氢溶液中,含有40g过氧化氢和60g水 |
A.C5H10 | B.C4H8 | C.C4H10 | D.C5H12 |
| ||
A.CO | B.CO2 | C.C2O4 | D.C2O2 |
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