I need an online chemistry tutor. anyone interested?
its IGCSE chemistry grade 11

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o

The bone of a dinosaur and the imprint of a leaf are examples of which kind of fossils? a) index b) body c) amber d) trace