Column chromatography uses a stationary and a mobile phase to separate compounds. what is the stationary phase in the column chromatographic purification of crude pentacene derivative?

Troy is the ceo of a manufacturing company, and he is planning to open a new factory in his community.because the new factory will require heavier traffic from delivery trucks and employees' cars, troy is partnering with the city to expand and rebuild roadways in the neighborhood.as part of opening the factory, he also plans to create a new hiring program. because he wants his workers to gain skills, he will also offer them the opportunity to attend college courses to receive business training. which of these outcomes are possible negative externalities? check all that apply. increased traffic in the neighborhood surrounding the factory better roads for drivers in the area more educated workers in the community pollution from trucks making deliveries to the factory new job opportunities in the city

Describe the cultural component "innovation." give two examples. give an example of the cultural component "cultural universals."

Situation #1: imagine that you are a free black male living in columbus, oh in 1863. you have seen the recruiting poster and have been thinking a lot about whether or not to enlist in the union army. write a one-page letter (double spaced) to your mother telling her of the decision you have made about enlisting (or not enlisting). be sure to explain the reasons that caused you to make the decision.