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Which volume of sulfur dioxide is formed when 9.7 g of zinc sulphide is heated in air?
2.4dm3
What happens and what is produced when calcium is heated in air?
carbonoxide would be produced.
How does the scale that forms copper is heated differ from the copper?
Heating copper in air the copper oxide CuO is formed.
What will happen when copper is heated?
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.
Which gas in air discolors brass?
Hydrogen sulphide.
How is copper obtained from it's sulphide ore write the balance chemical equation?
When sulphide ore is heated in air it is converted into copper oxide and SO2 is left. Again, copper oxide is then reduced to copper on heating( for equation, refer 10th CBSE text, pg no. 51)
Which volume of sulfur dioxide is formed when 9.7 g of zinc sulphide is heated in air?
2.4dm3
What is observed when air is passed over heated copper powder?
The copper becomes black!
What happens and what is produced when calcium is heated in air?
carbonoxide would be produced.
How does the scale that forms copper is heated differ from the copper?
Heating copper in air the copper oxide CuO is formed.
When a metal powder is heated in open dish it turns black which metal is that?
The metal might be copper. When copper is heated, it reacts with oxygen in air forming copper oxide which is black in colour.
Why the colour of heated copper powder becomes black when air is passed over it?
the copper reacts with 02 in the air to make copper oxide, which is black 2Cu+O2--> 2Cuo
What two products are formed when iron sulphide is heated in air?
Solid iron oxide and a poisonous called sulphur dioxide
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.
What will happen when copper is heated?
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.
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.
Why is the black stuff on heated copper not soot?
Because its called copper oxide from when the copper coin mixes with oxygen in the air. thats why alot of old coins are black.
