1. <span>It helps to maintain cell shape. It holds organelles in place, and for some cells, it enables cell movement.
</span><span><span>2.Suspending cell organelles.
</span><span>3.pushing against the plasma membrane to help the cell keep its shape.
</span><span>4.providing a site for many of the biochemical reactions of the cell.
Here are 4. Pick your favorite</span></span>
The answer is B; glacial erratics
2Ca + 2H2O —-> Ca(OH)2 + H2
The total number of atoms : N = 8.95 x 10²²
<h3>Further explanation</h3>
Given
3 grams of Neon
Required
The number of atoms
Solution
mol of Neon :
= mass : Ar Neon
= 3 g : 20,1797 g/mol
= 0.1487
The number of atoms :
N = n x No(No=Avogaro's number)
N = 0.1487 x 6.02 x 10²³
N = 8.95 x 10²²
Answer:
(a) Formation of the carbocation is the rate-determining step (RDS)
(c) Reactions at chiral carbons proceed with inversion of stereochemistry
Explanation:
SN1 reactions arenucleophilic substitution reactions in which the rate determining step is unimolecular.
The formation of a carbocation is the rate determining step. This depends on the electrophilicity of the leaving group. Thus the SN1 reaction mechanisms is dependent on the electrophile and not the nucleophile.
Polar and acidic solvents which can assist in the formation of the carbocation speeds up the rate determining step.
If the formation of carbocation occurs at a chiral center, both retention and inversion of stereochemistry are likely to occur.
Therefore, the correct options are A and C.