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what can be said about a reaction with h = 620 kj/mol and s = -0.46 kj/(molk)?

a. it is spontaneous above 1347 k.
b. it is always spontaneous.
c. it is spontaneous at 298 k.
d. it is never spontaneous.

Working with si (metric) units for each of the following commonly used measurements, indicate its symbol. liter gram milliliter kilogram meter centigram milligram centimeter kilometer second millimeter milliseconds

Match the mixture with the substance// i really need on this guys (it’s a pic btw)

Areaction in which products can react to re-form reactants is