Answer:
I beleve it would be -3 or -2
Explanation:
<h3>1.Pyrometallurgy</h3>
- This techniques involves the high temperature at which the Chemical reactions took place between the gases and solids.
- Pyrometallurgy involves calcination, Roasting and smelting process.
<h3> 2.Electrometallurgy</h3>
- This technique involves the metallurgy operations that took place in electrolytic cell.
- Electro- winning and Electro-refining are some of the electrometallurgy process
<h3> 3. Hydrometallurgy</h3>
- Reactions involves aqueous solutions to extract metal, use this technique.
- Hydrometallurgy involves precipitation , distillation , adsorption and solid extraction operations.
Now,
Type of metallurgy are used in the production of Fe is Roasting and Smelting.
<h3>What is Roasting?</h3>
- Ore is heated strongly with other substances, usually with Oxygen.
- Process temperature is below the melting point.
- Some of Impurities is removed as volatile substance.
In this reaction,
FeO changes to Fe₂O₃ to prevent the loss of iron during smelting.
4FeO +O₂→ Fe₂O₃.
Now,
<h3> What is Smelting?</h3>
- The oxides of less electropositive metals like Pb, Zn, Fe, Sn, etc.
- These are reduced by strongly heating with coal or coke.
- Reduction of the oxide with Carbon at high temperature is known as Smelting.
Thus from the above conclusion we can say that , metallurgy are used in the production of Fe is Roasting and Smelting.
Learn more about Iron here: brainly.com/question/2535311
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<span>Radioactive isotope, also called radioisotope, radionuclide, or radioactive
nuclide, any of several species of the same chemical element with
different masses whose nuclei are unstable and dissipate excess energy
by spontaneously emitting radiation in the form of alpha, beta, and
gamma rays.</span>
<u>Answer:</u>
<em>Latest take an example to understand how </em><em>balancing of chemical reaction</em><em> is done that is assuming the reaction between iron as well as </em><em>oxygen which reacts to form rust.</em>
<u>Explanation:</u>
For this we would simply right the reactant and product that is expected. Then we would see the number of molecules of each element present on either side.
If in the reaction the element’s molecules are the same on both sides then the reaction would be correct and if not then we have to apply trial and error method to balance the equation such that the number of molecules of each element is equal on both sides of the reaction.
Answer:
I say the 1st one I'm so terrible sorry if I'm wrong
Explanation:
Water can take many forms. At low temperatures (below 0°C), it is a solid. When at “normal” temperatures (between 0°C and 100°C), it is a liquid. While at temperatures above 100°C, water is a gas (steam).
The state the water is in depends upon the temperature. Each state (solid, liquid, and gas) has its own unique set of physical properties.
