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Because copper is mildly posionous. The tin layer prevents copper from leaching into the food.
Brass is an alloy that contains copper, so the same reason applies there.
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Copper date of discovery?
Copper has been known of from antiquity. Many cultures used copper. Not date can be given.
What name is given to the method of extracting copper from an ore using electricity?
This process is called "electrowinning" of copper.
Solvent and solute of a brass cooking pot?
I do know that a mixture of copper and zinc create braa but i do not know for sure which is the solvent and which is the solute. I belive the copper is the solvent and the zinc is the solute. Best of luck answering this question ! - I do know that a mixture of copper and zinc create braa but i do not know for sure which is the solvent and which is the solute. I belive the copper is the solvent and the zinc is the solute. Best of luck answering this question ! -Copper is the solvent and zinc is the solute.
Why is brass not a metal?
All materials are magnetic in some form. Copper, which is diamagnetic, is affected negligibly by magnetic fields because it has no permanent magnetic moment and a magnetic susceptibility less than 0. This is the same reason materials such as water, wood, oil, plastic, gold, mercury, and bismuth are unaffected by common magnetic fields. Given a strong enough magnetic field, however, the effect can be seen. Diamagnetic materials, such as copper, are repelled from the source of the magnetic field.
Why are laboratory table-tops are given an acid resistant coating?
Simply because - 'accidents' can happen !... The coating is there to prevent spilled acids and other chemicals 'eating' into the worktop.
Why are copper and brass utensils given a coat of tin-give reasons?
Because copper is mildly posionous. The tin layer prevents copper from leaching into the food. Brass is an alloy that contains copper, so the same reason applies there.
What type of coating is given to non stick cooking utensils?
Teflon
Are the fumes given off molten brass toxic?
yes they definitely are. brass is made of zinc and copper. both metals are dangerous in the blood, at high levels. (more than trace) look up zinc poisoning and copper poisoning.
Will zinc alloy jewelry tarnish?
Yes, zinc alloys e.g brass will tarnish given the "right" conditions.Zinc alloys contain copper, and copper is one of the most tarnish-prone metals there is, so any alloy containing copper will tarnish eventually, depending on the percentage of copper alloyed.
Why does a potato acquire a greenish deposit at the anode during electrolysis of potato?
You do not mention what you are using as the anode and cathode, but i would assume that given the green colour you are using copper or brass perhaps as the anode, and it is breaking down into a copper carbonate(which is green). By applying electrical current to the circuit you are speeding up the conversion of copper to copper carbonate(or similar).
What is copper commonly used for?
Copper flashings on roofs , copper water supply, copper drainage (DWV) copper gas lines (medical etc) copper for electric, copper for art work, copper mixed with other metals to create an alloy like bronze or brass, copper nails to prevent rusting when exposed to the elements, used in fire suppression systems and air conditioning and heating applicationsCopper is gold wire electricety dumb people hello:)
What does the electrical term - copper clad - signify?
It is much like electroplating. To make something more conductive it is given a coating or cladding of another more conductive element. Take copper clad ground rods. The original ground rod is just a steel rod. To make is more conductive a coating of copper is plated to it. This now enhances the steel ground rod buy improving its conductivity with the soil around it and secondly giving it an anti rust covering that will last the life of the ground rod.
What is characteristics of wire?
A wire has to be made of a conducting metal such as copper or aluminium, and it has to be thick enough to carry the required amount of electric current. Wire is often given an enamel coating to insulate it Wires are often stranded which gives flexibility.
What is thermal conductivity of brass a?
This family of alloys, which consists of copper and zinc is brass. The conductivity of brass is a function of the amount of zinc in the copper/zinc mix. The chart below delineates the conductivity of brass as a function of zinc content.Figure 2. Effect of Zinc Content on the Electrical Conductivity of BrassCopper-30% zinc is a good starting place when selecting copper alloys for strength and formability. This is also a good "home base" when selecting alloys for conductivity. Designers can often use their experience with copper-30% zinc to estimate just how much more conductivity they must have in a given application. If only twenty percent more is needed, then a metal with a conductivity equal to 34% IACS is required. If twice the conductivity of copper-30% zinc is needed, only copper-5% zinc will be useful among the brasses, and its lower zinc content means a sacrifice in strength. There are a number of alternate alloys to consider in such a case, from the Coppers, High Coppers, and Bronzes.
In painting what term is given to the first coating applied to a surface that is to be painted on?
Primer.
Copper date of discovery?
Copper has been known of from antiquity. Many cultures used copper. Not date can be given.
What keeps a penny from rusting?
Rust is the name normally given to iron oxide, a compound formed when iron or steel is exposed to oxygen. Pennies, or cents in the US (and Canada until 2012) are made from copper and other non-ferrous metals so by definition they don't form rust. However some countries' "copper" coins are actually made of steel with a thin copper coating. If the coating is damaged oxygen can cause the underlying steel to rust although the copper itself does not.However, copper can and does react with oxygen and other materials over time, but usually it's a much slower process than what happens with a ferrous metal. In the case of coins, the most common reaction produces a greenish patina called verdigris; it's normally copper carbonate but in proximity to seawater verdigris can contain copper chloride.
