The density of lead is 1.13 ✕ 104 kg/m3 at 20.0°c. find its density (in kg/m3) at 143°c. (use α = 29 ✕ 10−6 (°c)−1 for the coefficient of linear expansion. give your answer to at least four significant figures.)

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.