If 2.49 mol of ethene (C2H4) undergo combus- tion according to the unbalanced equation
C2H4 +02 - CO2 + H20,
how many moles of O2 is required?
Answer in units of mol.

Determine the energy released per kilogram of fuel used. given mev per reaction, calculate energy in joules per kilogram of reactants. consider 1 mole of tritium plus 1 mole of deuterium to be a mole of “reactions” (total molar mass = 5 grams).

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from