Explanation:
As it is known that entropy is the degree of randomness of the molecules of a substance or object.
When particles or molecules of a substance are placed in orderly manner then it means that there is low entropy. But when molecules are randomly moving then it means the system is in disorder and will have high entropy.
Since, molecules of a solid are orderly arranged. Therefore, solid substances have very low entropy.
Liquid molecules have the ability to slide past each other. Hence, liquids have moderate entropy whereas gas molecules are held by weak intermolecular force.
So, molecules of a gas move much more rapidly and hence, they have high entropy.
As it is given that 3 He is cooled to 2.7 mK, and the liquid settles into an ordered super-fluid state.
Therefore, there will occur a decrease in entropy.
Thus, we can conclude that the sign of entropy for the given case is negative.
In chemistry and physics, the atomic number<span> of a chemical </span>element<span> (also </span>known<span> as its </span>proton number<span>) is </span>the number of protons<span> found in the nucleus of an </span>atom<span> of that </span>element<span>, and therefore identical to the charge </span>number<span> of the nucleus. It is conventionally represented by the symbol Z.</span>
<span>13
Amino acids have a common structure where there is a carboxyl group at one end (CO2H) and a amino group at the other (NH2). There's also a side chain that's unique for every amino acid. When two amino acids are joined in producing a polypeptide, the carboxyl and amino groups are linked with the release of a water molecule.
So in this problem, you simply need to count the number of links, which will be 1 less than the number of amino acids in the chain. Hence, for a 14 amino acid chain, you need 13 links which produced 13 water molecules.</span>
Answer:
83.6 g
Explanation:
The limiting reactant is carbon and oxygen is in excess.
C + O₂ ⟶ CO₂
Data:
Mass of C = 22.8 g
Mass of O₂ = 78.0 g
Mass of unreacted O₂ = 17.2 g
Calculations:
Mass of O₂ reacted = 78.0 g - 17.2 g = 60.8 g
Mass of reactants (C + O₂) = 22.8 g + 60.8 g = 83.6 g
According to the Law of Conservation of Mass, the mass of the product (CO₂) equals the sum of the masses of the reactants.
The mass of CO₂ is 83.6 g.
D. The volume of a new substance has increased.
