What are two ways that scientists use chemical analysis in real life

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

If the theoretical yield of a reaction is 26.0 grams and you actually recovered 22.0 grams, what is the percent yield?

In a chemical reaction, the number of moles of the reactants a. should never be equal to the number of moles of the products. b. may or may not be equal to the number of moles of the products. c. depends on the amount of product that is formed. d. should always be equal to the number of moles of the products.