WHAT ELEMENT IS THIS: I am a noble gas. I share my name with the home planet of an alien superhero. You will find in a period greater than 3 but less than 6.

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

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Which description best characterizes the motion of particles in a solid?