1) How many atoms of oxygen are found in the reactant side of the chemical formula? H2O a) 4 b) 2 c) 1 2) What is the total amount of atoms found in this formula? Ca4NO2 a) 6 b) 3 c) 7 3) What is the coefficient in this formula? 6Cu2SeO4 a) 6 b) 14 c) 2 4) How many elements are in this formula? 6Cu2SeO4 a) 30 b) 3 c) 24 5) How many atoms of oxygen are in the formula? 6Cu2SeO4 a) 12 b) 6 c) 24 6) How many hydrogen atoms are on the product side? P4O10 + H2O ---> H3PO4 a) 4 b) 3 c) 2 7) How many sulfur atoms are in this chemical formula?  a) 1 b) 2 c) 3 d) 4 8) How many atoms are in the reactant side of this equation?  H2 + O2 --> H2O a) 2 b) 3 c) 5 d) 4 9) Is this equation balanced or unbalanced? H2 + O2 --> 2HO a) Balanced b) Unbalanced c) I don't Know 10) Is this equation balanced or unbalanced? H2 + O2He3 --> H2O + He2 a) Balanced b) Unbalanced c) Unknown 11) What is the subscript in this chemical formula? 4H2 a) 4 b) H c) 2 12) The coefficient shows... a) the number of molecules b) the number of atoms within the element 13) The subscript shows... a) the number of molecules b) the number of atoms within the element

Counting Atoms

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