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(Answered) Determine the molecular formula of a compound that has a molar mass of at least 135 g/mole.


Determine the molecular formula of a compound that has a molar mass of at least 135 g/mole.


Determine the molecular formula of a compound that has a molar mass of at least 135 g/mole.      and no more than 160 g/mole and an empirical formula of CH2O     A)  C4H8O4                                      B)  C6H12O6                                 C)   C3H6O3                                 D)   C5H10O5                                   E)  C5H10O6 2.The molecular formula for aspirin is C9H8O4 To the nearest gram, one mole of aspirin weighs:       use the table provided        A)  182                B)  181                   C)  180                    D)  170                  E)  171 3. A beam of protons will behave in what way in an electric field?       A)  be unchanged                   B)  be repelled by the positive electrode                                C)  be repelled by the negative electrode 4. Most of the known elements are (at room temperature and pressure):              A) solid and metallic                          B) solid and non-metallic                                C) gaseous and non-metallic                         D) liquid and metallic 5.  In the forward reaction:  2 Cu+ + Fe → 2 Cu + Fe2+ , the substance that gets reduced is:        A)  Cu                     B)  Fe                          C)  Cu+                                    D)  Fe2+ 6.  Balance the chemical equation given below, and determine the number of kg of MgO that        are needed to produce 1.00 kg of Fe2O3 .                             ____ MgO(s) + ____ Fe(s) → ____ Fe2O3(s) +_____ Mg(s)     A)  0.75                 B)  0.757                C)  750                    D)  757          E)  0.775

 


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Jan 02, 2020

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