Looks like you're missing an answer choice. I have this question on my practice test for AP Chemistry, the correct answer would be KCl.
mass AgCl = 2.23 - 0.80 = 1.43g AgCl
1.43g AgCl / 143g/mol AgCl = 0.01 moles AgCl
- AgCl has a mole ratio of 1:1 so:
moles Ag+ = moles Cl-, therefore Ag+ has 0.01 moles and Cl- has 0.01 moles
- MCl also has a 1:1 ration
moles Cl- = moles M+
- 0.01 moles of M+ and Cl-
0.01 Cl- = x/35.45 = 0.3545g Cl-
mass MCl = 0.74g
0.74g MCl - 0.3545g Cl- = 0.3955g M+
0.3955g M+/x =0.010 mol M+
x= 39.55g M+
K+ has a molar mass of approximately 39.10
Therefore KCl is your answer
Answer:
Part A - Dd
Part B - 50%
Part C - Option E
Part D - dY
Part E - 50%
Part F - 50%
Explanation:
Given,
Let the allele for dominant trait (wild type) be "D" and the allele for recessive ornithine transcarbamylase deficiency (OTD) be "d"
A X-linked recessive gene affects male offspring in a family tree though a female remains a carrier until it mates with a male with the a recessive diseased allele.
Part A
Father's genotype would be Dd. Hence it will pass d gene (X diseased gene ) to her daughter.
Thus , Woman's genotype is Dd
Part B
Genotype of Normal man - DD
DD * Dd
DD, Dd, Dd, DD
One of the two males will have ornithine transcarbamylase deficiency (OTD), an X-linked recessive disorder producing mental deterioration hence, the probability is 50%
Part C
Option E is correct
Only one of the female offspring will have ornithine transcarbamylase deficiency (OTD), an X-linked recessive disorder which will be expressed if other allele is also X linked recessive.
Hence, The chance of being a carrier will be one out of two female offspring i.e 50% and and chance of having OTD is 0%
Part D
dY
Part E
dY * Dd
DY, dY, dD, dd
one out of the two female is diseased. Hence, the probability is 50%
Part F
50%
The cell enters the first phase of mitosis: prophase. The replicated chromosomes condense into shapes that resemble the letter X. The membrane around the nucleus starts to break down. Special structures called spindle fibers form
From there, the cell enters metaphase—the second phase of mitosis. Each chromosome attaches to a spindle fiber at its centromere (the middle of the chromosome). Chromosomes line up at the center of the cell. The next step is anaphase.
The last step is when the cell enters the last phase of mitosis—telophase. The chromosomes begin to uncoil and form chromatin. The spindle breaks down, and two new nuclei form. The cell membrane begins to close in, starting to split the cell into two.
<span>Answer: C. Time of ancient life.
Paleozoic comes from Greek word palaios which means "old" or "ancient", and zoe which means "life".
it could be translated as "</span>Time of ancient life". The range of Paleozoic era is from <span>541 to 251 million years ago that could be divided into 6 smaller periods.</span>
<span>Adenintriphosphate, also known as ATP, is the main energy carrier of the cell. This occurs because it is a molecule responsible for providing the energy for DNA synthesis; in fact, most metabolic reactions that require energy are associated with ATP and that energy is produced there.</span>
