Calculate the standard enthalpy of formation of carbon disulfide (CS2) from its elements, given the following data. C(graphite) + O2(g) - CO2(g)
S(rhombic) + O2(g) - SO2(g)
CS2(1) + 3 O2(g) - CO2(g) + 2 SO2(g)
Δήχη
= -393.5 kJ/mol
ΔΗχη
= -296.4 kJ/mol
ΔΗχη = -1073.6 kJ/mol

As you move from right to left on the periodic table the atomic radius fill in the blank

How many neutrons does a atom of cobalt have?

The human eye contains a molecule called 11-cis-retinal that changes shape when struck with light of sufficient energy. the change in shape triggers a series of events that results in an electrical signal being sent to the brain that results in vision. the minimum energy required to change the conformation of 11-cis-retinal within the eye is about 164 kj/mol.