To what volume would I need to add water to the evaporated solution in problem 3 to get a solution with a concentration of 0.50 M?

Based on the position vs. time graph which velocity vs. time graph would correspond to the data

An occluded front moves over the farmland that has been experiencing drought conditions. what change in weather will this front likely bring? a. gray skies, but no rain b. an extended period of rain c. more dry air and sunny skies d. violent, short-lived thunderstorms

Use examples from the article to explain one positive and one negative effect that chemistry has had on society