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Matter & Energy

Matter & Energy

Matter & Energy. Honors Chemistry. I. Science. Science is a body of knowledge collected by scientists over many years & the methods used to obtain the knowledge Chemistry is the study of the composition, structure and properties of matter & the changes it undergoes

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Chemical equations describe CHEMICAL REACTIONS .

Chemical equations describe CHEMICAL REACTIONS .

Chemical equations describe CHEMICAL REACTIONS. During a chemical reaction, the ways in which atoms are joined together are changed. OLD bonds are broken and NEW bonds are formed as REACTANTS are converted into PRODUCTS.

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Practice #1: ___ step

Practice #1: ___ step

Practice #1: ___ step. ___CS 2 (l) + __O 2 (g) ? ___CO 2 (g) + __SO 2 (g) How many moles of oxygen (O 2 )are required to make 6 moles of sulfur dioxide?. MOLES of A. MOLES of B. Practice #2: ____ steps. ___CS 2 (l) + __O 2 (g) ? ___CO 2 (g) + __SO 2 (g)

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Ch 9 Section 1 Review Page 311 #4-5

Ch 9 Section 1 Review Page 311 #4-5

Ch 9 Section 1 Review Page 311 #4-5. Br 2 + Cl 2 ? 2 BrCl. Page 311 #4a. How many moles of BrCl form when 2.74 mol Cl 2 react with excess Br 2 ?. Br 2 + Cl 2 ? 2 BrCl. Page 311 #4b. How many grams of BrCl form when 239.7 g Cl 2 react with excess Br 2 ?. Br 2 + Cl 2 ? 2 BrCl.

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PROBLEM A:

PROBLEM A:

PROBLEM A: 2C 2 H 6(G) + 7O 2(G) --> 4CO 2(G) + 6H 2 O (L) If exactly 15.6 moles of ethane gas combusts, how many moles of oxygen are used?. PROBLEM B: 4NH 3(G) + 5O 2(G) --> 4NO (G) + 6H 2 O (L) If exactly 649.6 L of NO (G) form, how many liters of O 2 are used?.

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