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'''Homework'''

'''Directions'''- Write the Definition of each word below. Use the information  from Chapter 9 to assist you.

Chemical Equation-

Word Equation-

Formula Equation-

'''Directions'''- Answer each question using chapter 9 for assistance

1. What additional information do coefficients tell you about a chemical equation?

2. Find the moles of each particle and the coefficients of the following equation, if there are 92.0 g of Na and 32.o g of O2 that come together to form 124.0 g of Na2O.

moles of Na: ____ moles of O2: ____ moles of Na2: ____

___Na + ___O2 --> ___Na2

3. Write the equation for the endothermic reaction of CO2 breaking into C and O2.

4. Write the equation for the exothermic reaction of C and O2 combining to form CO2.

5. Show the chemical formula for each of the following, include phases.

solid magnessium metal-
         
         liquid iodine-
         
         solid sodium chloride-
         
         gaseous water- 
         
         sodium chloride dissolved in water-
         
         sodium hydroxide dissolved in water-

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