Ounces
Use a unit multiplyer. See how many ounces are in 1 pound then put 3 pounds and the number ounces in 1 pound over 1 in fraction form then multiply it. I know it's difficult to understand by computer so I tried my best to answer it.
30 x 20 = 600 ounces
A container that holds 8 ounces of liquid
Pounds or Kilograms
98 pounds.
Ounces, unless it's a giant cookie.
Ounces
an air conditioner would be best weighed in pounds
lbs AKA pounds
Modern telephones do not weigh very much, so ounces would be more appropriate.
Since a stove is quite a heavy object, it would be best measured using pounds. Ounces are smaller (1/16th of an imperial pound) and make less sense for weighing large objects.
Well that would depend on the physical size of the dictionary I have an edition that probably weighs 5 pounds and another one printed which is just the size of pack of playing cards is weighs about 5 ounces.
Pounds
Use pounds as a zebra would be some fraction of a ton (2000 lbs)
Ounces would be best.
Oreo is the best-selling Nabisco cookie and the best-selling cookie of the 20th century.
Best flavored cookie is he pineapple flavored cookie, but they are not sold so you can make them yourself