Iam doing a average atomic mass question. i have the answer to it, but it says to round it to 3 decimal places. the answer is 39.89982753. i don't know whether to round it to just the 39.899 or to actually round it to it being 39.900. if anyone could that would be

Round to 39.900.

Explanation:

You want to round to three decimal places.

39.899 827 53

That means you must drop all the underlined digits.

The rule for rounding is: If the first figure dropped (8) is greater than 5, increase the last figure kept (9) by 1.

Then, rounding 39.899 827 53 to three decimal places gives 39.900.

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".