Barack Hussein Obama II was born on August 4, 1961, in Honolulu, Hawaii. His mother, Ann Dunham, was born on an Army base in Wichita, Kansas, during World War II. After the Japanese attack on Pearl Harbor, Dunham's father, Stanley, enlisted in the military and marched across Europe in General George Patton's army.
Best Answer: It refers to the heat change fora reaction. Means that the reaction absorbs heat from and emits heat to the environment. A delta H rxn with a positive sign means that heat is taken from the environment.Such a reaction is termed as an endothermic reaction. A delta H rxn with a negative sign means that heat is emitted or given to the environment.Such a reaction is termed as an exothermic reaction.
1 Note how both x and y coordinates are positive because the point is up and to the right of the origin. 2  Drag the point into the top left quadrant (second quadrant). 3  Note now that the x-coordinate is negative because it is to the left of the origin, where x values are negative.