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.
Gram is a weight measurement. Cups is a volume measurement. There is no direct conversion between the two as every object has a different mass.
No.
They're not. Weight is the force produced on a mass by gravity. Volume is totally independent.
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.
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.
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.
Your weight will be the same as a volume of mercury of equivalent weight.
Yes, the weight is 20 ounces, however the volume will be different
Density is mass per unit volume, and sometimes in some industries weight per unit volume is used. Weight per unit volume is also sometimes called specific weight. Weight and mass are not the same. Volume per unit mass is called specific volume, and is the reciprocal of density. It is not clear whether volume per unit weight can also be used as a measure of specific volume.
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.