Answer: Please find answers in explanation column
Explanation:
Journal entry for Nexium & Associates
1.Journal to  record Services provided in February.
Date              Account                      Debit                           Credit
March 1      Accounts receivable       $800
                Service revenue                                                    $800
  2.Journal to record purchase of furniture and supplies on account.
March 9      Office furniture         $1,060
                Office supplies             $160
           Accounts payable                                                          $1,220
3.Journal  To record payment made to suppliers, Corner Office Inc.
March 15      Accounts payable          $1,220
                           Cash                                                                  $1,220
4.Journal To record the bill of electricity for  march which is not yet due to be paid till April.
March 23       Electricity expense        $430
            Outstanding Liabilities                                                     $430
5.Journal To record the salary payment to employees.
March 31       Salaries expense                 $850
               Cash                                                                              $850