2) NazSO4 + BaCl2 -> BaSO4 + 2NACI You mix two moles of Na;SO, with one mole BaCl2 a. How many moles of each product are made? b. Which is the excess reactant? c. Which is the limiting reactant? 3) Based on the same chemical equation from the previous question, now you react 5 moles of BaCl2 with 2 moles Na:SO. a. How many moles of each product are made? b. Which is the limiting reactant? c. Which is the excess reactant?

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.