Solid copper appears to gain mass when heated in air, because the copper reacts with oxygen in the air to form copper oxide. However, the actual mass of the copper does not increase; the mass of the solid increases by a value equal to the mass of oxygen removed from the air.
When metals are heated to a certain temperature, the particles of metal fuse together with oxygen particles. These new particles of oxygen are now being weighed together WITH the mass of the metal. When particles are added, so is mass.
If copper is heated to red heat in air, its surface will oxidise (combine with oxygen) and the total mass of the sample will then be greater than the original mass of pure copper.
When copper is heated it forms black copper oxide on the surface. This will make it heavier.
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The mass of water does not increase when copper sulfate is added to the water, unless the copper sulfate is hydrated. The mass of the mixture of water and copper sulfate, of course, does increase.
The anhydrous copper sulfate (CuSO4) has a molar mass of 159,62.
Dehydrated copper sulfate contains approximately 12.8% sulfur by weight.
This mass is 59,463 g.
Aluminium Sulphate is Al2(SO4)3 and its mass is27x2 + 96x3 = 342g/mole
No, the mass is conserved.
The mass of water does not increase when copper sulfate is added to the water, unless the copper sulfate is hydrated. The mass of the mixture of water and copper sulfate, of course, does increase.
8.79 grams of magnesium sulfate will remain.
To find the mass of anhydrous salt, we need to find the molar mass of water in the copper-II sulfate pentahydrate (5 molecules of water per molecule of copper-II sulfate). The molar mass of water is 18 g/mol. Therefore, the mass of water in 2.3754g of copper-II sulfate pentahydrate is 5 * 18 = 90g. Subtracting this from the initial mass gives us the mass of anhydrous salt: 2.3754g - 90g = 1.3754g.
The anhydrous copper sulfate (CuSO4) has a molar mass of 159,62.
Copper(II) sulfate can fom 3 hydrates; the molar mass increase from the anhydrous salt to heptahydrate.
When copper is heated it oxidizes. The additional oxygen molecules it takes on when oxidizes leads it to have a higher mass.
The copper wire glows red. Once it cools...the copper reacts with the air to produce copper(II) oxide. This is shown by the black tarnish on the copper wire.
It may seem like the iron rusts, but it doesn't. The chemical formula for copper sulfate is CuSO4, or, 1 copper atom, 1 sulfur atom, and 4 oxygen atoms to each molecule. When the iron is placed in the solution of copper sulfate, it replaces the copper in the solution, turning copper sulfate into iron sulfate (FeSO4) and pure copper collects on the iron. This can be proved by removing the copper and seeing that the iron has lost a lot of its mass, as in, it lost mass to the copper sulfate. The iron (steel wool) takes on a pinkish color which is metallic copper deposited when the solution forms iron sulfate.
Dehydrated copper sulfate contains approximately 12.8% sulfur by weight.
To find the percent of copper sulfate in the mixture, divide the mass of copper sulfate isolated (6.0 g) by the total mass of the mixture (7.0 g) and multiply by 100. In this case, (6.0 g / 7.0 g) * 100 = 85.7%, so the mixture is 85.7% copper sulfate.
Copper's mass does not actually increase when heated. However, its volume does increase due to thermal expansion. This expansion causes the atoms in copper to move farther apart, reducing the density of the material as a whole.