Which changes occur when Pt2+ is reduced? A)The Pt2+ gains electrons and its oxidation number increases. B)The Pt2+ gains electrons and its oxidation number decreases. C)The Pt2+ loses electrons and its oxidation number increases. D)The Pt2+ loses electrons and its oxidation number decreases.

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Which of the following statements is true about planck’s law

Astudent carefully transfers 30 g of water and 30 g of alcohol in a glass tube, forming two layers and filling the tube completely. after sealing the tube, the student mixes the solutions, and notices a bubble that forms in the tube. what is the mass of the contents in the glass tube after mixing?