The white solid is a compound. Explain the difference between the mixture of zinc and sulfur and the compound formed by the chemical reaction between them.

How does electronegativity changes as we move from left to right across a period

What is the predicted change in the boiling point of water when 1.50 g of barium chloride is dissolved in 1.50 kg of water?

In chile, the deepest earthquake occurred at 61.7°w longitude at a depth of 540 km. if the rocks at the focus began subducting 10 million years ago and are now 1000 km from their original position, what is the average rate of subduction in cm/yr?