If a cell is blank

Cell Reference:
Value if blank:

hint: if entering a text value then need to enclose it in double quotation marks (e.g. "value")
Value if not blank:

hint: if entering a text value then need to enclose it in double quotation marks (e.g. "value")
Formula:

=IF(ISBLANK(C5),J1,J2)
=IF(ISBLANK(C5),J1,J2)