Lisa made observations of stars at different times of the year. She noticed a lot of patterns that the fall, while she couldn't find any patterns in the summer. Why might this be?

When a comet collides with earth, it adds material to our planet and causes great damage. therefore, a collision like this is a a. destructive force b. constructive force c. geologic process and event d. constructive and destructive force

What stress will shift the following equilibrium system to the left? n2(g) + 3h2(g) ⇌ 2nh3(g) adding more n2(g) adding more nh3(g) increasing the pressure of the system reducing the volume of the container

If 90.0 grams of ethane reacted with excess chlorine, how many grams of dicarbon hexachloride would form