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What else can I help you with?
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 happens when a piece copper wire is heated in the outer region of the flame until its red hot?
When a copper wire is heated in the outer region of a flame until it's red hot, it undergoes oxidation which forms a layer of copper oxide on its surface. This layer appears as a black residue and can be easily removed through polishing to reveal the original copper surface beneath.
What does 14k cu mean on gold?
"14k cu" on a piece of gold means that it is 14 karat gold with copper added to it. The "cu" indicates the presence of copper in the alloy mixture, which is commonly used to give gold additional strength and durability.
What happens to a piece of copper placed in magnesium chloride solution?
When a piece of copper is placed in magnesium chloride solution, no reaction will occur because copper is less reactive than magnesium. Copper will remain unchanged in the solution.
How many Cu atoms are present in a piece of sterling-silver jewelry weighing 33.14 g?
To determine the number of Cu atoms in the piece of sterling silver jewelry, you would first need to convert the weight of the jewelry to moles using the molar mass of silver. Then, since sterling silver is typically 92.5% silver and 7.5% copper by weight, you can calculate the number of moles of copper present. Finally, use Avogadro's number to convert from moles to atoms.
Why is it when a piece of copper is folded squashed and heated in air only the outside of the copper is black?
The black coating you see is a coating of copper oxide, which forms when the hot metal reacts with air. no air can reach the inside, so it does not react to form black copper oxide.
What is 22k rate of gold?
The Karet weight of a piece of gold states how much of the piece is actual gold and not silver or copper. A piece that is 22k means that it is 91. 6% pure gold.
When a piece of magnesium is heated in the air it gains weight so where does the extra weight come from?
That comes from the adding oxide. 2 Mg + O2 = 2 MgO. Burning is oxidation.
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 happens when a piece copper wire is heated in the outer region of the flame until its red hot?
When a copper wire is heated in the outer region of a flame until it's red hot, it undergoes oxidation which forms a layer of copper oxide on its surface. This layer appears as a black residue and can be easily removed through polishing to reveal the original copper surface beneath.
What does 14k cu mean on gold?
"14k cu" on a piece of gold means that it is 14 karat gold with copper added to it. The "cu" indicates the presence of copper in the alloy mixture, which is commonly used to give gold additional strength and durability.
Does a piece of copper floats in salt water?
Without seeing the piece of copper you have, it's hard to say.An object will displace a volume of water equal to its weight. This is how a ship that weighs over 100,000 tons can float: the volume of the ship is greater than the volume of 100,000 tons of water. The ship pushes aside (or "displaces") 100,000 tons of water, and the rest of the ship rides above the surface.Now for your piece of copper: If it's solid, the copper will weigh more than an equal volume of water. If it can't push aside water equal to its weight, it'll sink. If the copper is hollow, it will weigh less than an equal volume of water, and will float.
What contains only pure copper?
A piece made from refined copper.
When burning copper and rubber what makes the different colors in the flame?
Any piece of copper heated will do the same thing. When heated, the colored coating on the copper is called "scale," and consists of a thin layer of copper oxide on the surface of the copper. Depending on the thickness of the layer and its temperature, the scale can be some very interesting colors, such as red, blue, brown, and pink.
How much copper is there in a piece weighing 200 poundsif a certain alloy contains 5.25 copper?
Okay, I'm assuming that you mean 5.25% copper by weight, otherwise there isn't enough information here to solve the problem. 5.25% of 200 lbs = 10.5 lbs
Does a piece of dust take up space and have weight?
Yes, a piece of dust takes up space because it occupies a specific volume, even though it is very small. It also has weight due to the presence of particles and molecules within it, which contribute to its mass.
What happens to a piece of magnesium when it is heated?
it become ductile
