Liquid hydrazine, N2H4(l), is a rocket fuel. It combusts in oxygen gas to form nitrogen gas and liquid water: N2H4(l) + O2(g) -> N2(g) + 2H2O(l)

Use the following thermochemical equations to calculate the enthalpy change for the combustion of liquid hydrazine:

2NH3(g) + 3N2O(g) -> 4N2(g) + 3H2O(l) ΔH = -1010kJ

N2O(g) + 3H2(g) -> N2H4(l) + H2O(l) ΔH = -317kJ

2NH3(g) + 0.5O2(g) -> N2H4(l) + H2O(l) ΔH = -143kJ

H2(g) + 0.5O2(g) -> H2O(l) ΔH = -286kJ

Edit: For reference, the book says the answer is ΔH = -623kJ

the atomic mass is the bottom number on the element.

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plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

i don't know people like to fight everywhere rip.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl