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Chem05
Chemistry chapter 5 - Chemical Sentences
Question | Answer |
---|---|
In a chemical equation, what does "→" stand for? | The arrow means "yields, as in "__+__ yields__" |
What are the elements and/or molecules on either side called? | The components on the left are the products, and the components on the right are reactants. Products → Reactants |
What is the difference between the coefficient numbers and the subscript numbers in a chemical equation? | The coefficient numbers show how many of each molecule is involved in the reaction. The subscript numbers show how many of each atom are within each molecule. |
What is a mole? | The mole is a unit of measurement used to express amounts of a chemical substance; the molecular weight expressed in grams. |
What is the relevance of 6.02X10^23, in terms of moles? | It represents the number of atoms in 1 mole. |
Identify the following equation. CO2+H2O → C6H12O6+O2 | This is the equation for photosynthesis |
Explain the system used to show the amount of ethyl alcohol in liquor. | The proof of an alcoholic beverage is twice its alcohol content expressed as percentage by volume. |