Using structural formulae, write an equation to show reaction of propene with hydrogen bromide. Show all possible products.​

What is the correct lewis structure for chloroform chcl3

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)

One similarity and one difference between an element and a mixture of elements