MOLE RATIOS IN CHEMICAL EQUATIONS DATA/CALCULATION SHEET NAME Fe (steel wool) filter paper + Cu filter paper Cu CALCULATIONS 1. What is the ratio of moles Cu to moles Fe shown in reaction (a) on p. 65? Divide moles Cu by moles Fe and express this ratio to three significant figures. Fe tcus04 a. FCSO4+C4 What is the ratio of moles Cu to moles Fe shown in reaction (b) on p. 65? Divide moles Cu by moles Fe and express this ratio to three significant figures. Fealsou)+3cu 3cUsay b. 2Fe 2. Calculate your experimental moles Fe. How many significant figures should you have? SHOW WORK Calculate your experimental moles Cu. How many significant figures should you have? SHOW WORK Divide moles Cu by moles Fe and express this ratio to the proper number of significant figures. Did reaction (a) or reaction (b) occur? 67

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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.