Can anyone me this is due and i need someone check over my answers

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.