For an object to appear opaque, what interaction must occur between light waves and the object they hit?

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

What effect might melting sea ice have for people who live in coastal areas?

Stage in which a typical star has completely stopped fusion