Is there really some kind of fat in it or not if not I'll try it out

No fat but it’s 96 Calories per Cup and has 24 g Carbohydrates Per Cup. Hard to believe because they advertise “No Calorie Sweetener”. Misleading and sleazy but surprisingly legal because the rule is if a serving (Splenda uses 1 Teaspoon) is less than 5 calories then it’s okay to advertise 0 calories. I didn’t believe it either, check the facts.

At the supoerstores, a bag of splenda , the large size, equals about 5 pounds sugar. About how much does this size equal?

Splenda comes in different presentations, individual Sachettes, tablets, granulated and 50/50. In the case of granulated Splenda bags, they indicate on their label the weight of the contents of the bag and its equivalent to the weight in conventional sugar. For example, a 1.2 Lbs. Splenda bag. Equals or sweeten as 10 Lbs. Of conventional sugar. The purpose of which they made it granulated is for facilitate the measuring process in recipes, so, a cup of granulated Splenda is equal to 1 cup of conventional sugar.

How many cups is this package equivalent to?

According to the package, 1.63 lbs. of Splenda equals 13.5 lbs. of sugar. 13.5 lbs. of sugar equals 27 cups according to a google search.

If it's not open go to Amazon returns then just follow the instructions tell then why you're returning or if it was damaged in shipping they will refund your money and you won't have to send it back