It's about one-fifth as heavy as a Football (American).
In other words, 80 grams is 0.19461496248040 times the weight of a Football (American), and the weight of a Football (American) is 5.1383510664070 times that amount.(a.k.a. "pigskin") (NFL standard)
Per National Football League official rules, an American football must weigh between 396.89332375 g and 425.242846875 g. Because of NFL regulations, ceremonial considerations, and backup requirements, each NFL Superbowl requires the manufacture of 144 balls exclusively for the event.
It's about one-fifth as heavy as a Football (Soccer).
In other words, 80 grams is 0.190 times the weight of a Football (Soccer), and the weight of a Football (Soccer) is 5.30 times that amount.(a.k.a. Soccer, a.k.a. Association Football) (FIFA Law 2 specification)
According to FIFA's Law of the Game number 2, a football must weigh between 410 g and 450 g. An artifact on display at the Smith Art Gallery in Museum in Stirling, Scotland is said to be the world's oldest football and is about one-third to one-half the size of a modern football.
It's about five-and-a-half times as heavy as a Compact disc.
It's about six-and-a-half times as heavy as a Battery (AAA).
In other words, the weight of a Battery (AAA) is 0.150 times 80 grams.(Alkaline)
An "AAA" size battery weighs 12 g. Batteries are named by the American National Standards Institute (ANSI) Committee C18 and AAA batteries were given their name because they were smaller than the "AA" and "A" size batteries which were invented first.
It's about one-tenth as heavy as a Basketball.
In other words, 80 grams is 0.128268952540 times the weight of a Basketball, and the weight of a Basketball is 7.79611885960 times that amount.(NBA official ball standards, Size 7)
A regulation NBA basketball, manufactured by Spalding, is known as a Size 7 ball and weighs 623.68950875 g. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about eleven times as heavy as an Eye (Human).
It's about one-fifteenth as heavy as a liter of Water.
In other words, 80 grams is 0.07999776 times the weight of a liter of Water, and the weight of a liter of Water is 12.500350 times that amount.(fresh; 4° C / 39.2° F; maximum density)
Contrary to popular belief, 1 liter (0.0.264172052358148 gal) of water at 4° C / 39.2° F (its point of maximum density) weighs 1,000.028 grams rather than 1 kg exactly. The total volume of water on the planet Earth is about 13,590,000,000,000,000,000 (13.59 quntillion) L (3,590,000,000,000,000,000 gallons).