Is n2+ h2→nh4 a balanced chemical equation? is it obeying the law of conservation of matter? A. no the equation us not balanced. hydrogen is not balanced but nitrogen is balanced

B. Yes, the equation is balanced

C. no, the equation is not balanced, they both are not balanced

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)