Question

State the fuel used in space craft .​

Answer 1

Explanation:

liquid hydrogen

Today, liquid hydrogen is the signature fuel of the American space program and is used by other countries in the business of launching satellites. In addition to the Atlas, Boeing's Delta III and Delta IV now have liquid-oxygen/liquid-hydrogen upper stages.

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Answer 2

Liquid hydrogen (LH2)

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Liquid hydrogen is the liquid state of the element hydrogen. Hydrogen is found naturally in the molecular H₂ form. To exist as a liquid, H₂ must be cooled below its critical point of 33 K.

• Formula: H2
• Boiling point: -252.8 °C
• Autoignition temperature: 571 °C (1,060 °F; 844 K)
• Density: 70.85 g/L (4.423 lb/cu ft)
• Melting point: −259.14 °C (−434.45 °F; 14.01 K)
• Molar mass: 2.016 g·mol−1

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