Use the thermodynamic data provided to answer the following question: Determine the amount of heat released in direct combustion of 1 mole of hydrogen gas. (Note that IRL, not all of the energy calculated in this section can be converted into useful work - some of it may dissipate. Fun fact.)-285.8 kJ/mol-241.8 kJ/mol241.8 kJ/mol-237.1 kJ/mol285.8 kJ/mol

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

The two naturally occurring isotopes of chlorine are 35cl (34.969 amu, 75.77%) and 37cl (36.966 amu, 24.23%). the two naturally occurring isotopes of bromine are 79br (78.918 rm amu, 50.69%) and 81br (80.916 amu, 49.31%). chlorine and bromine combine to form bromine monochloride, brcl. 1. how many peaks will be present in a mass spectrum for brcl? the four combinations of molecule possible given these four isotopes are: 81br37cl, 81br35cl, 79br37cl, and 79br35cl. 2. what are the masses of the four different brcl molecules? express the masses using six significant figures, in decreasing numeric order (highest to lowest), separated by commas.

What causes the appearance of lines in a emission spectrum