1.4g of calcium oxide obtained by heating limestone was found to contain 0.4g of oxygen. another sample of 3.5g of calcium oxide obtained by direct combination of calcium and oxygen was found to contain 2.5g of calcium. show that data are in accordance with the law of definite proportion

If the same amount of cacl2 is added to equal volumes of water and maple syrup, which will have the higher temperature?

What is limiting reactant? with examples

Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid synthesis. an industrial chemist studying this reaction fills a 25.0l tank with 4.5 mol of sulfur dioxide gas and 4.5 mol of oxygen gas at 30.°c. he then raises the temperature, and when the mixture has come to equilibrium measures the amount of sulfur trioxide gas to be 1.4 mol. calculate the concentration equilibrium constant for the reaction of sulfur dioxide and oxygen at the final temperature of the mixture. round your answer to 2 significant digits.