What is the mole ratio for nitrogen if you have 5.1 moles of nitrogen and 12.3 moles of neon?

What does the xylem do? stores the glucose captures the sunlight absorbs oxygen into the leaf carries water from the roots to the leaves

To calculate percent by mass, use the equation below: calculate the percent by mass of each element. %n = % %h = % %o = %

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?