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A solution of a weak base and its conjugate acid act as a better buffer than does a solution of a weak base alone because <span>A solution of a weak base alone has no acid present to absorb added base.</span>
If an acid (In this case HCl) is added to a buffer or a weak base solution, the following reaction happens:
HCl + A⁻ → HA + Cl⁻
In this way, the addition of acid is neutralized by the base.
If a base is added (In this case NaOH), only a solution of a weak base and its conjugate acid can react in the following way:
NaOH + HA → NaA + H₂O
So, a solution of only a weak base can resist the addition of acids but not bases, so it isn't a good buffer.
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Answer:
<span>When identical particles pack in a simple cubic lattice, there is ONE particle per unit cell.
Explanation:
As we know that simple cube has eight corners and each particle at every corner is shared by eight cubic crystals. So it means that only </span><span>eighth </span>part of a particle is present at one corner of each cube. Therefore, each corner contain 1/8 particle, then all corners will contain 1/8 × 8 = 1 particle.
which level are u on now?
Answer:
(aq) Li2SO4 + (aq) Ca(NO3)2 --> (s) CaSO4 + (aq) 2LiNO3
Explanation:
Aqueous Lithium Sulfate is Li2SO4
Aqueous Calcium Nitrate is Ca(NO3)2
When they're mixed, we get the double displacement solution Calcium Sulfate and Lithium Nitrate.
Precipitate is solid.
We got solid Calcium Sulfate so the other solution must be aqueous.
CaSO4 (s) --> Calcium Sulfate product
LiNO3 (aq) --> Lithium Nitrate product
We balance equation now. 2 Lithiums total and 2 Nitrates total. (Cuz there are 2 on the other side, 1 here)
Answer:
Producing disease-resistant crops
Explanation:
B. is the Right Answer Hope this helps!
