Please help me with this ASAP. It is due in 4 hours and I have no idea how to do it.

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction

How many moles are in 123.0 grams of kclo4?

How do you determine the percent yield of a chemical reaction