If we're talking about more than one formula, we usually say formulae. Each ammonia molecule contains one atom of nitrogen and three atoms of hydrogen. We know this because the hydrogen symbol has ...

The Tri-State Fertilizer Recommendation bulletin provides nitrogen recommendations based on wheat yield goal using the ...

We may earn commission if you buy from a link. Why Trust Us? Is there really an advantage to using nitrogen in tires rather than air, such as better fuel economy, a smoother ride, or longer tire life?