Từ các dữ kiện sau: C (than chì) + O2(k) → CO2(k) H1 = -393,5kJ
H2(k) + 1/2O2(k) → H2O (l) H2 = -285,8kJ
2C2H6(k) + 7O2(k) → 4CO2(k) + 6H2O(l) H3 = -3119,6kJ
Tính biến thiên entanpi chuẩn của phản ứng ở cùng điều kiện:
2C(than chì) + 3H2(k) → C2H6(k) H4 = ?

No is the answer to the question

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The atomic nucleus made up from protons (yellow) and neutrons (blue) and held together by nuclear forces. nuclear forces (also known as nuclear interactions or strong forces) are the forces that act between two or more nucleons. they bind protons and neutrons (“nucleons”) into atomic