If saffron costs $5000 per pound how many grams can you buy for $15. Using dimensional analysis

Why should the scientific method be used to answer a question? a. it provides a way to test an idea without any bias. b. it provides a way to test a hypothesis. c. it provides a way to ensure all hypotheses are proven correct. d. it provides a way to quickly turn a hypothesis into a scientific theory.

When the earth was formed and cooled, why did nickel and iron end up in the center of the earth while basalt and granite ended up in the outer layers

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