How are heterogeneous mixtures and solutions the same?How are they different?

Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.

How many grams of phosphorus are contained in 5.09 moles of phosphorus?

The ammonia molecule in the diagram has the observed bond orientation because