A "quart" is a measure of volume. You can not equate a volume with a weight unless you know the density of the material. Apples are not of uniform density and there will be gaps between the apple slices. Therefore we can not give you a precise answer on the information presented in your question.
if you take two apples from three apples, then you have 2 apples because you asked 'how much do you'. so it means, how many apples do you have in your hands, or how much you've taken. and so, the answer to this is two.
If you have 2 Apples and you add 2 Apples then you would end up with a total of 4 Apples.
One Quart
2
You cannot weigh an area. Just as you cannot weigh a distance. (How much does one centimeter weigh?)
1 cup of sliced almonds has a mass of 92g
1 quart (0.946 litres or 0.946 kilograms)
8
About 2.08 lbs.
2lbs.
1.5 lbs
The mass is 18,753 kg.
7 lbs
8 oz
That would depend on the type and size of the apples you started with.
Up-to 500 grams .
4quarts in a gallon and quarts would weigh different amounts depending on whats in the quart like a quart of water will weigh less than a quart of custard