Mass of the steel is 
- density of a substance can be regarded as the ratio of the mass of that substance to that of it's volume.
- Mass of substance can be regarded as the quantitative measure of inertia, it can be simply explained as a fundamental property of all matter
<em> We can express this mathematically as ;</em>
Given :
Density of this steel= 8.1g/cm3
If we make Mass subject of formula,
Then let us substitute the values into the expression
Therefore, mass of the steel is
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The balanced chemical equation is :
Moles of 
,
Now, by given chemical equation , we can see 2 mole of react with 1 mole of 
.
So , 2.27 mole react with :
Mass of oxygen is :
Therefore, mass of oxygen in grams produced is 18.16 g.
Hence, this is the required solution.
Answer:
Saturated solution
Explanation:
Saturated solution is the solution in which no more solute can be dissolved at a particular temperature.
A amount of the solute, potassium nitrate is dissolved at elevated temperature and on cooling, it precipitates. It means that the solution is saturated at that temperature. <u>Precipitation of the solute at lower temperature indicates that the solution is saturated solution.</u>
Explanation:
( a )
<u>The four types of spread spectrum techniques are as follows -</u>
1. Direct sequence spread spectrum .
2. frequency hopping spread spectrum .
3. chirp spread spectrum .
4. time hopping spread spectrum .
( b )
<u>The Direct sequence spread spectrum was devised for eavesdropping in the military .</u>
In the field of telecommunications , the Direct sequence spread spectrum , it is the technique of spread spectrum modulation which is used to reduce the overall inference of the signal .
Some things that can indicate a chemical change are change of odor, change of color, change in temperature or energy, such as the production or loss of heat. An example could be the rusting of metal, there would be a color change of going from a shiny silver to a dirty, splotchy red color. Some things that indicate a physical change are change of appearance like change of shape, etc. It can also be like a change between a solid to liquid to gas. For example, the cutting of a piece of paper.
