It would depend on where you got it from, but most legally distilled vodka would be between 37% and 41% by volume alcohol. It does not matter what size the bottle is.
A liter of vodka weighs approximately 2.2 pounds.
There is no sugar, sodium, carbs, fat or cholesterol in vodka.
Around £13
1 liter
About $20.
That is 3.3 cups
generally 40% in ireland anyway, so 400ml
2lbs 7.2 oz
a little less than a cup
Where I live (MS Gulf Coast) a 1.75 liter bottle of Skol vodka costs $13.50 at the liquor store I usually shop at. I have found it for about a dollar less at other stores in my area.
1 liter = 1.05668821 US quarts
Assuming that a "quater" is a quarter, and not some exotic measure, the answer is 4.