What is the empirical formula for a compound which contains 67.1% zinc and the rest is oxygen?

The kinetic energy of the liquid increases. hope this !

Where are the following questions

1.75 is the weight of one medium egg

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.