For question 1:
<span>25°C = 298 K
</span><span>ΔG = ΔH - T ΔS
</span>ΔH= ΔG + TΔS = −91368 + (298)(−284)=−91368-84632=-175730
<span>Therefore ΔH is approx - 176,000 J
</span>
For question 2:
The statement "A negative change in free energy, or −ΔG, represents a spontaneous reaction." is false
Answer:True
Explanation:
A ideal solution is a solution which obeys Raoults law on almost every concentration and temperature range.
Ideal solutions are formed by mixing those solute and solvent which has identical molecular properties.
Lets take A be the solute and B be the solvent so to form a ideal solution from these components the solute-solute(A-A) molecular interaction and solvent -solvent (B-B) molecular interactions must be identical with the solute solvent interaction(A-B).
The solute-solute molecular interaction ,solute-solvent molecular interaction and solvent-solvent molecular interaction must be equal in order to form a ideal solution.
The enthalpy of mixing and volume of mixing of ideal solution is zero.
enthalpy of mixing is the amount of energy released on mixing a solute and solvent and in case of ideal solutions it is zero.
Volume of mixing is change in volume on mixing a solute and solvent.
30.962
34500
28512
31860
answer:
7.49 x 105 mm
0.45 miles
885 yards
34500 inches
reason:
I converted all the measurements to inches.
First, I multiplied 7.49x105 to get 786.45mm
Then, I divided it by 25.4 to get about 30.92 inches
Next, I converted 0.45 miles to inches by multiplying it by 63,360 to get 28,512 inches
For the yards, I took 885 and multiplied it by 36 to get 31,860 inches
Since the last one was already in inches, all I needed to do was put them in order from least to greatest
<span>In a dehydration reaction monomers are joined to become a polymer, in order for this to occur water is removed. Dehydration itself implies removal of water and this makes the molecules bind with other identical molecules making polymers. This bonding can be brought back with process of hydrolysis which breaks the polymers to monomers.</span>
Answer:
Explanation:
Such type of compounds that have hydrogen, oxygen and one other element like Chlorine, Bromine etc and one hydrogen atom is directly connected with oxygen atom are called as oxyacid.
The acidic strength of such oxyacid which contains same element is determined by the number of oxygen atoms. Such as in the case of , is the weakest acid because it has only two oxygen while is the strongest acid because it has four oxygen atoms.
When the compound contains same number of oxygen and hydrogen atoms but one different element then the acidic strength depends on the electronegativity of the element. So in the case of , is the weakest acid because it contain iodine element that has less electronegativity while is strongest acid because chlorine atom has high electronegativity. So the overall order in weakest to strongest will be .