CREATE TABLE table_28432 ("Specimen weight/size" TEXT, "Calculated activity  (  Bq  ) " FLOAT, "Calculated activity  (  Ci  ) " TEXT, "Estimated activity GR ( api ) " TEXT, "Estimated exposure  (  mRem  ) /hr*" TEXT)

If the calculated activity (CI) is 4.96 10 11, what is the specimen weight/size?
SELECT "Specimen weight/size" FROM table_28432 WHERE "Calculated activity ( Ci )" = '4.96×10 −11'
SELECT "Specimen weight/size" FROM "table_28432" WHERE "Calculated activity ( Ci )" = '4.96×10 −11'