WATER
They're not. Weight is the force produced on a mass by gravity. Volume is totally independent.
The weight of the rock will be lessened by the weight of the same volume of water. If the rock weighs less than that volume of water, it will float (as does pumice). Thus, if you had a rock that has a density (weight/volume) of 2 times the same volume of water, it would weigh one half of its dry weight when in water.
No.
The weight depends on the volume, or size, and the density of the band. In the same way, a book's weight depends on its volume and density.
Ingredients are listed by weight, with the largest amount used first. An exception to that is when this statement is used: "contains less than 2% of..." Those ingredients do not need to be listed in order.
Your weight will be the same as a volume of mercury of equivalent weight.
A measurement in teaspoons is based on the volume of the ingredient and a measurement in ounces is purely based on weight. Therefore it depends on the weight of the ingredient. There is no magic conversion calculation. 8 oz of flour will fill many more teaspoons than 8oz of butter, for example. You can find conversions from volume to weight for specific ingredients, such as when converting an American cup measurement of flour to European kilos, or even lbs and ounces, but this conversion will not be applicable to other ingredients. If the vol to weight conversion is known for one of the ingredients in a tried and tested recipe, you can use the same ratio to apply to the remainder of the ingredients. I hope that helps.
No, sand and water do not weigh the same for the same volume. Water has a density of 1 gram per cubic centimeter, while the density of sand varies but is generally higher, so the weight of the same volume of sand will be greater than that of water.
mass involves weight....volume is size. A ballon and a loaf of bread may have the same volume (occupy the same space) , but the bread has more volume.
The difference between an object's weight, and the weight of water with the same volume as the object.
Bear in mind that in order to convert a unit of weight such as grams into a unit of volume such as cups, you first have to know the density of the material in question, and food ingredients do not all have the same density. I would suggest that instead of doing these conversions, you just buy a small scale and weigh your ingredients.
They're not. Weight is the force produced on a mass by gravity. Volume is totally independent.