what is the enthalpy of combustion of a compound if its enthalpy of formation is -520 kJ/mol and if the total enthalpy of formation is its products is -670 kJ/mol (adjusted for the coefficients )?

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.

Use the periodic table to determine how many grams of oxygen would be required to react completely with 859.0 g c2h2

What volume does 1.70 ×10–3 mol of chlorine gas occupy if its temperature is 20.2 °c and its pressure is 795 mm hg?