This is a bag of apples.apple Why s? Is chocolate a countable noun or an uncountable noun? Why do some use plural after quantifier? Why do some use plural after quantifier

"Chocolate" is an uncountable noun, but if "a bag of" or "a packet of" is added before it, then "s" will be added

RELATED INFORMATIONS

1. Two boxes of apple or two boxes of apples?
2. 1 two kilo of apples 2 two kilos of apples 3 two kilos of apple 4 two kilo of apple The main explanation is why? The more detailed the better
3. Is it 1. Two bags of apples, 2. Two bags of apples or 3. Two bag of apples? Or can all three be used in different situations?
4. we want _ for the Spring Feastival.A:two boxes of apple B:two box of apple C:two boxes of apples
5. What is the difference between piece and slice Please be more specific. Let's give some examples
6. What's the difference between a piece of and a cup of?
7. The difference between a pair of and a piece of
8. sing a piece of To show you want the check, make a movement with your hands as if you are singing a piece of paper,
9. Excuse me: is there any difference between a piece of paper and a sheet of paper?
10. A piece of paper in English, in addition to a piece of paper, can use a pair of paper
11. Would you like any rice
12. Would you like to have _ Some or any?
13. I'd like a bowl of rice?
14. Want to do sth, would like to do sth Want is a verb, to do is an infinitive? Want to is a verb, do is an object?
15. Would like to do sth and want to do sth? I understand it myself
16. 3. Would you like two bag of rice
17. This bag of rice is much _______ (hacey)than that one ,
18. This bag is --------(not empty)of rice.Can You carry it
19. This bag of rice is __ heavier than that one. A much B more C very please help me to answer and explain the reason!
20. This bag of rice is much (heavy) than that one? This bag of rice is much (heavy) than that one?