Methane (CH 4 ) , ammonia (NH 3 ) , and oxygen () can reaci to form hydrogen cyanide (HCN) and water (H 2 O) according to this equation 2CH 4 +2NH 3 +3O 2 2HCN+6H 2 O How many grams of methane are required to produce 2 moles ? Use your periodic table to help you. Please show work

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)

The fact that the total amount of energy in a system remains constant is a(n)

Astring vibrates with a frequency of 10 hz. why can't a person hear the sound waves produced by the vibrating string, no matter how large the amplitude of the waves? out! this is homework and due tomorrow! you so much!