You have a mixture that is soluble only in 100% mtbe. you want to run your column in 5% mtbe/hexanes. which method of column loading should you use in this case and why?

Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?

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

Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.