Calculate how many moles of NO2 form when each quantity of reactant completely reacts via the following reaction: 2N2O5(g)→4NO2(g)+O2(g) 1) 2.4 mol N2O5

2)6.4 mol N2O5

3)15.8 g N2O5

4)3.75 kg N2O5

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?