There is as much water in this cupas in that one What clause does as lead to? It's a relative clause. Is as omitted?

There is as much water in this cupas in that one What clause does as lead to? It's a relative clause. Is as omitted?

This is not a clause
As many as. As means "a is as much as B"

There is_____ much milk in this glass _________ in that one
So... As or as... As
Focus on such... As

Use as... As
Such as = for an example

Is there is much water in the glass?

This is the agreement between the subject and the predicate

How water is there in the glass

Many, water are uncountable nouns

There is a lot of water in the glass

It's OK
There is not a lot of water in the glass
there is a little water in the glass

Have some justice, please. Why?

Yes, but sometimes it's not. If you're inviting someone or expecting them to give a positive answer to your question, you still use some, such as would you like some cakes or can I ask you some questions. As for why, I don't know. It should be a common grammatical habit!
Would you like some juice?

mum,can I have some juice,please?
What is its Chinese meaning?

Mom, can I have some juice?

please have------------- A.some juice B.some juices C.a juice .

A.some juice

Please have some justice

I'm glad to be able to answer your question here
Please don't have any juice.

Can l have () water? Some or any in the space

some
The reason is simple
If you expect a positive answer, use some
However, there is no grammatical error in using any, just a semantic deviation