Answer:
The correct answer is c. 3.67 × 10⁻¹¹
Explanation:
The dissociation equilibrium and ICE table for FeCO₃ is the following:
FeCO₃ (s) ⇄ Fe²⁺(aq) + CO₃²⁻(aq)
I 0 0
C +s +s
E s s
At equilibrium, the solubility product contant (Ksp) expression will be:
Ksp= [Fe²⁺] x [CO₃²⁻]= s x s = s²
Given: s= 6.06 x 10⁻⁶ M, we calculate Ksp as follows:
Ksp= s²= (6.06 x 10⁻⁶ M)²= 3.67 x 10⁻¹¹
Thus, from the given options the correct is c. 3.67 × 10⁻¹¹
The energy produced when nucleons fuse together is called the: Select the correct answer below:
a. strong nuclear force
b. nuclear fusion energy
c. nuclear binding energy
d. none of the above
Answer:
Option C (nuclear binding energy) is the appropriate choice.
Explanation:
At either the nuclear scale, the nuclear binding energy seems to be the energy needed to remove and replace a structure of the atom itself into the characterize elements (to counteract the intense nuclear arsenal). Nuclear warheads (bargaining power) bind everything together neutrons as well as protons within an elementary particle.Some other options in question aren't relevant to the particular instance. So that the option preceding will also be the right one.
How is safety achieved during scientific investigations?
Answer investment
Explanation: you have to have saftey while you still do science
write the name of this structure
Answer:
The name of the compound is:
4–bromo–5,5–dichloro–hex–3–ene–1–yne
Explanation:
To the above compound, we simply do the following:
1. Identify the functional group of the compound.
2. Locate the longest continuous carbon chain. This gives the parent name of the compound.
3. Identify the substituent group attached.
4. Give the substituents the lowest possible count alphabetically.
5. Combine the above to obtain the name of the compound.
Now, we shall determine the name of the compound as follow:
1. The compound has carbon to carbon triple bond (C≡C) yne and carbon to carbon double bond (C=C) ene.
2. The longest continuous carbon chain is 6 i.e hexane.
3. The substituents group attached are:
i. Bromine (bromo), Br
ii. Chlorine (Chloro), Cl
4. In counting, ene comes before yne. But in this case, ene assumes same position from either side, So we shall consider counting from the side that gives yne the lowest count. Thus, ene is at carbon 3 and yne is at carbon 1. Therefore,
i. Bromo, Br is at carbon 4.
ii. Chloro, Cl appears twice and both are at carbon 5.
5. The name of the compound is:
4–bromo–5,5–dichloro–hex–3–ene–1–yne.
If you add enzyme to a solution containing only the product(s) of a reaction, would you expect any substrate to form?
a. Yes, because the enzyme reduces the standard free energy change for the reaction.
b. No, because the enzyme lowers the transition state energy barrier.
c. No, because product inhibits the enzyme.
d. No, because enzymes catalyze only the forward reaction.
e. Yes, because the reaction proceeds backwards until equilibrium is reached.
Answer:
e
Explanation:
Provided the reaction that leads to the formation of the products can proceed in both forward and backward directions, the correct answer would be yes because the reaction will proceed backward until equilibrium is reached.
For a reaction that can proceed both forward and backward, the addition of a catalyst increases the rate of reaction in both directions based on the fact that a catalyst cannot alter the equilibrium of a reaction.
Hence, if an enzyme is added to the product of a reaction that has the potential to proceed in both forward and reverse reactions, a substrate would be expected to form because the reaction will proceed backward until an equilibrium is reached.
The correct option is e.