A cylinder of copper is heated to 85.0°C and added to a calorimeter containing 55.0 ml of water at 20.5°C. When thermal equilibrium is achieved, the final temperature is 32.0°C. What is the mass of the cylinder in grams?

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)