Scientists understand the nuclear reactions that occur in the Sun’s core, but want to predict how the Sun will change with time as it consumes more of its hydrogen fuel. Which of the following would be the best method to study how the Sun will change over the next few billion years?

i think 4.44 moles

he uptake of drugs from the intestine is often strongly influenced by diffusion. for example, consider a water-insoluble steroid for treating inflammation that is solubilized in aggregates of detergent molecules, called micelles. these micelles, aggregates of 80 soap molecules, have a molecular weight of 24,000, a diameter of 2.6 nm, and a charge of -27. the positively charge ions (counterions) in this system are na".