What is the empirical formula for C2 H2?

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

21. consider the following chemical reaction: n2+ o2 2 no if 10.0 g of n2 reacts with excess oxygen then how many grams of no can be formed? a) 10.7 g b) 21.4 g c) 32.9 g d) 42.8 g page 4 of 8

Describe at least two advantages and two disadvantages of using hydropower as a source of energy.