What is the formula of methane, the main gas in natural gas?
- ACH₄
- BCO₂
- CC₂H₆
- DCH₂
What is the formula of methane, the main gas in natural gas?
Plants absorb energy from sunlight during photosynthesis. How is photosynthesis classified?
What should a student always wear to protect the eyes when working with chemicals?
How does an antacid tablet relieve heartburn caused by excess stomach acid?
Which element has the most metallic character?
What colour is phenolphthalein indicator in a basic solution?
반응식 __C₃H₈ + __O₂ → __CO₂ + __H₂O를 맞추세요. O₂의 계수는 얼마인가요?
H₂ 2 mol과 O₂ 2 mol을 섞어 2H₂ + O₂ → 2H₂O로 반응시킵니다. 한계 반응물은 무엇인가요?
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