Platinum is a transition metal and forms Pt+2 and Pt+4 ions. Write the formulas for the compounds for each platinum ion with: a. bromide ions

b. carbonate ions

c. nitrate ions

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

Ill give u brainliest pls how is mass of carbon conserved during cellular respiration

What are the similarities between compounds and mixtures?