A chemist wants to make 1.5 L of 0.5M HBr by diluting a 6.OM HBr solution. Hon many liters of that solution should be used?

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)

Which samples do the atoms have the least kinetic energy

Apropane torch is lit inside a hot air balloon during preflight preparations to inflate the balloon. which condition of the gas remains constant