Which equation represents a chemical equilibrium?
1)N2(l)<-->N2(g)
2)2NO2(g)<--->N2O4(g)
3)CO2(s)<-->CO2(g)
4)NH3(l)<--NH3(g)

How many moles are equivalent to 55.5g of nano3

Suppose a lab group reports a ppercent yield of sand of 105. is it really possible to collect more sand than was originally represented? what is the possible explanation for the extra product?

Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments