Houses with carpet are much quieter than houses with tile or hardwood floors because of sound wave A)
absorption.
B)
diffraction.
reflection.
D)
refraction

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)

Kp is the equilibrium constant for dissociation of the propionic acid dimer. what is the sign of the slope for a plot of the natural logarithm of kp vs. inverse temperature for this reaction?

What are the coefficients that will balance the skeleton equation below? n2 + h2 → nh3