1) The year is 2050, you want to join Elon Musk on Mars. Your initial rocket idea is to use a 50L,200 bar, cylinder of helium to propel you into space using energy stored only in the pressure of the gas. The total mass of you plus the helium rocket is 150kg. Assuming all the energy in gas pressure is converted into potential energy, how high does your rocket go? Formaldehyde may be produced in the reaction between methanol and oxygen: 2CH3OH(l)+O2(g)2HCHO(g)+2H2O(l):Hr=326.2kJ The standard heat of combustion of hydrogen is H2(g)+21O2(g)H2O(l):H^c=285.8kJ/mol (a) Use these heats of reaction and Hess's law to determine the standard heat of the direct decomposition of methanol to form formaldehyde