In which part of the digestive system does a chemical change of the food first occur?

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

An atom of lithium (li) and an atom of chlorine (cl) engage in a chemical reaction. which correctly describes the structure of the resulting chemical compound? hint: consider the class of each element. the chemical compound will have a network structure. the chemical compound will have triple bonds. the chemical compound will have a ball-and-stick structure. the chemical compound will have double bonds.