Sulfur reacts with oxygen to form sulfur dioxide (so2(g), hf = –296.8 kj/mol) according to the equation below.

what is the enthalpy change for the reaction?
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Imagine that you have produced several versions of lactase, each of which differs from normal lactase by a single amino acid. describe a test that could indirectly determine which of the versions significantly alters the three-dimensional shape of the lactase protein.

Astudent is asked to identify and element that is pale yellow brittle solid and does not conduct electricity. at which location in this periodic table would the element most likely be found?

Which element would mostly likely have an electron affinity measuring closest to zero