Calculate the enthalpy of the reaction
2no(g)+o2(g)→2no2(g)
given the following reactions and enthalpies of formation:
12n2(g)+o2(g)→no2(g), δfh∘a=33.2 kj mol−1
12n2(g)+12o2(g)→no(g), δfh∘b=90.2 kj mol−1

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?