However, a ferromagnetic material will still lose its magnetism if you heat it above a certain point, known as its Curie temperature. Iron has a Curie temperature of 770Â°C (1300Â°F), while for nickel the Curie temperature is ~355Â°C (~670Â°F). If you heat an iron magnet to 800Â°C (~1500Â°F), it stops being a magnet.
Water (H2O) is made from 2 atoms of hydrogen and 1 atom of oxygen. A mole of water molecules would be 2 moles of hydrogen atoms plus 1 mole of oxygen atoms. From the periodic table we see the atomic weight of hydrogen is 1.0079 and the atomic weight of oxygen is 15.9994. Atomic mass is the number of grams per mole of the element. This means 1 mole of hydrogen weighs 1.0079 grams and 1 mole of oxygen weighs 15.9994 grams. Water would weigh. weight of water = 2(1.0079) g + 15.9994 g. weight of water = 2.0158 g + 15.9994 g. weight of water = 18.0152 g.
How many ounces are in a glass of water? The density and specific gravity of water varies depending on the temperature of the water. At 32 degrees Fahrenheit, when water is cold enough to freeze, the specific weight of the water is 8.34 pounds per gallon, so 16 ounces of water weighs 1.05 pounds.