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How much copper is in sterling silver?
Sterling silver is defined as no less than 92.5% pure silver. This means that up to 7.5% can be other material- this other is usually copper.
What is the chemical name of the product formed when copper reacts with a gas in air?
When the product is with oxygen it will be copper oxide CuO. If it is with nitrogen it is copper nitrate.
If 127g of copper reacts with 32g of oxygen gas to for copper oxide how much copper oxide is produced?
Copper oxide can exist as Cu2(I)O or CU(II)O. You need to find this out. It looks like Oxygen will limit the reaction anyway. Find the amount of moles by dividing the molecular mass of the limiting reagent, apply stochiometry, then find weight of product
Cu forms two oxides For the same amount of Cu twice as much oxygen was used to form the 1st oxide than to form the 2nd one What is the ratio of the valencies of copper in the first and second oxides?
Copper (II) oxide - CuO; copper valence - 2 Copper (I) oxide - Cu2O; copper valence - 1 Ratio: 2
Where was the copper sheathing fitted on the HMS alarm and why?
It was fitted on the hull. This is because copper is an antifouling material so marine organisms have great difficulty attaching. Without marine organisms (fouling) there is less resistance and the boat can go much faster.
Which material is denser feather or iron plate?
Iron is much denser than a feather. Yet, a particular sample of feathers weighs more than a sample of iron.
Does copper sink in water?
Copper does not sink in water.. An object with higher density than water sinks while an object with lower density than water floats..
When 127g of copper reacts with 32g of oxygen gas to form copper II oxide no copper or oxygen is left over How much copper II oxide is produced?
To get the answer just remember that in chemical reactions the total mass of all the parts before the reaction must be the same as the total mass of all the parts after the reaction.
Why coppers is commonly used in conductors?
Silver and gold are better conductors, but as copper is more abundant and is also a much cheaper material, copper is more commonly used.
Is water denser than aluminum?
I'm sorry i don't know what aluminum is but if you mean aluminium then its simply a denser material made of denser elements! wood being made of its carbon based materials and other composites but aluminium is, well aluminium much lower but higher numbers on the Periodic Table! (well i think this is it >.<)
How much copperII oxide would be produced from 25g of copper when reacted with oxygen gas?
31.3 g CuO
What are the Weaknesses of copper?
So far only a couple have been found.high temperaturewhen mixed with with a lot of oxygen ( Co2 ) it can be very explosivetoxicity- when there too much copper in a small space
How much copper is in sterling silver?
Sterling silver is defined as no less than 92.5% pure silver. This means that up to 7.5% can be other material- this other is usually copper.
Why are pennies from pre-1982 and from 1982 made of different material?
US pennies switched from copper to zinc due to the rising price of copper. Zinc is much less expensive.
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.
Can a planet be denser than its star?
Yes, the Earth is much denser than our sun.
Is clay denser than sponge?
Yes much more denser than sponge.
