Prevent additional sources of pollution because if the water gets polluted it can not be used and/or it won’t be pure/clean anymore.
Answer:
Option c is correct
Explanation:
The interstitial alloy elements occupy the free spaces in the metal structure and improve the symmetry of the crystalline network, for this reason this type of elements increases the hardness of the metal.
Vitreous metals are called that because they are formed by high cooling rates and form amorphous structures such as glass, such structures contain packaging of atoms of different sizes, which decreases the free spaces in the metal structure and this increases their hardness.
In option d, the work at low temperatures causes the vibrations of the atoms to decrease and compact, this makes many metals brittle but in general increases their hardness.
Option c is correct because in annealing the metal is heated to the austenization temperature, that is, the temperature at which a structural change occurs, which destroys its crystalline network and then slowly cools to maintain this structure change and by causing this disorder, the spaces between the atoms increase and the hardness of the metal decreases.
I would say the answers would be
A) respiration of living organisms.
and
D)<span>absorption of CO2 from the atmosphere by ocean water.</span>
<span>Molarity
is expressed as the number of moles of solute per volume of the solution. We solve the problem above as follows:
0.1000 mol Mg(NO3)2 / L (.1 L) ( </span><span>148.3 g / mol ) = 1.483 g Mg(NO3)2
</span>0.1000 mol Sr(NO3)2 / L (.1 L) ( 211.63 g / mol ) = 2.116 g Sr(NO3)2
Hope this answers the question. Have a nice day.
The appropriate response is a voluntary exchange. It is the demonstration of purchasers and merchants openly and energetically captivating in market exchanges. Additionally, exchanges are made such that both the purchaser and the dealer are in an ideal situation after the trade than before it happened.
