Urgent!! Calculati masa molara a unui gaz, daca o proba care cantareste 14 grame
ocupa un volum de 6,15 litri masurati la presiunea de 2 atm si temperatura
300K.

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

Explain that newton first law,second law and third law of motion?

Nonpoint source pollution is difficult to control because it