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.
Water weighs quite a bit too. That makes it a pain to keep enough with you in the wilderness. Weight of Water Pounds Kilograms Cubic cm. 0.0022 0.0010 Liter 2.2047 1.0000 Cubic inch 0.0361 0.0164 Gallon 8.3454 3.7854 Cubic foot62.428028.3169. You can see that the weight of a gallon of water is over 8 pounds. Now, that can make a pack awful heavy awful fast! The molecular weight of water is the combined weight of its two hydrogen atoms and one oxygen atom which amounts to 18.015 atomic mass units. The unit weight of water or specific weight of water is the same as the weight of one gallon of water.