for Mg(C4H7O2)2 . Express your answers as integers separated by commas. Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type Number of C4H7O2− units, C , H , O , Mg atoms =