Answer:Condensing the DNA into tightly packed chromosomes makes the process of chromosome alignment
Explanation:
Throughout most of the life of a cell, the DNA is only loosely wrapped around the histones and is not in the condensed chromosomal form. ... Condensing the DNA into tightly packed chromosomes makes the process of chromosome alignment and separation during mitosis more efficient
Answer: 24.1 L of 2.27 M HF will react with 3.70 kg of
Explanation:
The balanced chemical reaction :
To calculate the number of moles, we use the equation:
According to stoichiometry :
1 mole of require = 4 moles of
Thus 13.7 moles of will require= of
To calculate the volume for given molarity, we use the equation:
.....(1)
Molarity of solution = 2.27 M
Volume of solution in L= ?
Putting values in equation 1, we get:
Thus 24.1 L of 2.27 M HF will react with 3.70 kg of
Answer:
pH=4.63
Explanation:
The firt step is identify the <u>Acid</u> and the <u>conjugated base</u>:
HA <=> +
So, for this case we will have:
<=> +
Then:
HA =
=
With this in mind we can use the <u>henderson-hasselbach equation</u>:
pH = pKa + Log
We can calculate the <u><em>pKa</em></u> first
Then we can put the values in the equation:
pH = 4.2 + Log()
pH= 4.63