Element z reacts with bromine to form an ionic compound zbr2
a) state with reasons i) the physical properties of zbr2 at room temperature ii) whether z is a metal or non metal.
b)what is the formula of the oxide formed when z reacts with oxygen?

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.

What must be in balance for temperatures to remain constant?

What is the rate law for the uncatalyzed reaction?