1. What are the three main structures or the circulatory system? panto
O Aleluys kidneys
O 0.llar ben, slums:h
O c. Brin bloed. essels blocd
O D. Heart bcod vessels bood

Nitrogen dioxide reacts with water to form nitric acid and nitrogen monoxide according to the equation: 3no2(g)+h2o(l)→2hno3(l)+no(g) part a suppose that 4.2 mol no2 and 0.50 mol h2o combine and react completely. which reactant is in excess? express your answer as a chemical formula. nothing

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

When water dissolves sugar, which process is not involved? o dissociation o hydration o surface area of the solute increases sa