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If a piece of copper is heated in the air what will happen to the mass of the piece of metal?
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.
What is the number of moles of copper oxide in 7.95g copper oxide?
To find the number of moles, you need to divide the mass of copper oxide by its molar mass. The molar mass of copper oxide (CuO) is approximately 79.55 g/mol. Therefore, 7.95g of copper oxide is equal to 0.1 moles (7.95g / 79.55 g/mol).
When heated mercury oxide produces oxygen plus mercury. What would be the combined mass of oxeyn and mercury if 20 g of mercury oxide were heated?
When 20 g of mercury oxide is heated, it will decompose into oxygen and mercury. The combined mass of oxygen and mercury will still be 20 g, as no mass is lost or gained in a chemical reaction according to the Law of Conservation of Mass.
A sample of copper powder is heated in an evaporating dish using a Bunsen burner If the mass of the powder in the evaporating dish increases after heating this indicates that?
the copper must have combined with another substance.
If you heat copper why does its mass increase?
Heating copper increases its temperature, causing the atoms in the copper to vibrate more vigorously, which can lead to an increase in the mass as some of the surrounding oxygen is absorbed into the copper through oxidation. This results in the formation of copper oxide on the surface of the copper, which contributes to the overall mass increase.
Why does copper sulfate change mass when heated?
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.
If a piece of copper is heated in the air what will happen to the mass of the piece of metal?
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.
What is the number of moles of copper oxide in 7.95g copper oxide?
To find the number of moles, you need to divide the mass of copper oxide by its molar mass. The molar mass of copper oxide (CuO) is approximately 79.55 g/mol. Therefore, 7.95g of copper oxide is equal to 0.1 moles (7.95g / 79.55 g/mol).
When heated mercury oxide produces oxygen plus mercury what would be the combined mass of oxygen and mercury if 20g of mercury oxide were heated?
If 20g of mercury oxide were heated, the combined mass of oxygen and mercury would be 20 grams.
When heated mercury oxide produces oxygen plus mercury. What would be the combined mass of oxeyn and mercury if 20 g of mercury oxide were heated?
When 20 g of mercury oxide is heated, it will decompose into oxygen and mercury. The combined mass of oxygen and mercury will still be 20 g, as no mass is lost or gained in a chemical reaction according to the Law of Conservation of Mass.
A sample of copper powder is heated in an evaporating dish using a Bunsen burner If the mass of the powder in the evaporating dish increases after heating this indicates that?
the copper must have combined with another substance.
Does water lose mass while heated?
no
If you heat copper why does its mass increase?
Heating copper increases its temperature, causing the atoms in the copper to vibrate more vigorously, which can lead to an increase in the mass as some of the surrounding oxygen is absorbed into the copper through oxidation. This results in the formation of copper oxide on the surface of the copper, which contributes to the overall mass increase.
calculate the mass of copper that could be made from 4.0g of copper oxide?
I think 3.55 grams
What happens to the mass when magnesium is heated in air?
When magnesium is heated in air, it reacts with oxygen to form magnesium oxide. The total mass of the system, which includes the magnesium and the oxygen it reacts with, remains the same according to the Law of Conservation of Mass.
What happens to copper when it is heated?
When copper is heated it oxidizes. The additional oxygen molecules it takes on when oxidizes leads it to have a higher mass.
How much hydrogen is needed to obtain 2.54g of copper by reducing copper oxide?
The balanced chemical equation for this reaction is: CuO + H2 --> Cu + H2O. The molar mass of copper oxide is 79.55 g/mol, and the molar mass of copper is 63.55 g/mol. From this information, you can calculate that 2.54g of copper oxide requires 1.27g of hydrogen to complete the reaction.
