What is the oxidized substance in the following reaction?
fe + 2hcl → fecl2 + h2

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

Mr. rose asked his student to draw a quadrilateral with four unequal sides. an example of this kind of quadrilateral

Moving force of air flows from areas of high pressure to areas of low pressure true or false