You would weigh it on your kitchen scale
Too vague a question. If you mean, does sealing the cup change the mass, then no it does not change the mass of the water, though the sealing material would add its own mass to the total.
measuring cup
use a measuring cup
The mass is extremely similar. Also note, different brands of whiskey would also have slightly different mass.
You need some aluminum, a scale to determine the mass, and a measuring cup halfway filled with water to determine the volume of the piece of aluminum by substracting the volume after and before you drop the piece of aluminum in the water. Then you can calculate the density of the aluminum = mass / volume.
Since oil will float on top of water, we can assume that the weight (or mass) of water is greater than that of oil.
The answer will depend on the size of the cup and, therefore, the quantity of water in it!
James wants to find out whether a cup of salt water or a cup of fresh water will freeze more quickly. What is the best way for him to determine this
236.58824 grams
Mass of ice less than that of water.Weight (other than in space) of ice less than that of water. Volume of both the same. Density of ice less than that of water.
They are virtually the same
A metric cup is 250ml, and is a measure of volume, not mass. How heavy that will be depends on what you are measuring. If you are measuring something like water, the answer would be 4, because 1l of water has a mass of a kilogram. Searching the internet would tell you the mass of a cup of various substances.