Answer:
Explanation:
As we know that the formula for pH is
![pH = -[log H+]\\](https://tex.z-dn.net/?f=pH%20%3D%20-%5Blog%20H%2B%5D%5C%5C)
It is also given in the question that one pH unit represents the 10 fold change in the concentration of hydrogen ion.
Now for lemon juice whose pH is 2, hydrogen ion concentration is equal to
And for pure water whose pH is 
, hydrogen ion concentration is equal to
Thus, the H+ ion concentration in lemon juice is 
times greater than the pure water.
In order for the local residents to lower the frequency of landslides in the region that experiences frequent landslides from heavy rains, they should do the following:
A. Start contour plowing on the slopes where landslides happen.
B. Plant vegetation on the slopes that experience landslides.
Answer: False
T-cells get their name from the endocrine gland (thymus) in which they are stored, not from the thyroid gland.
T cells<span> belong to a subtype of white blood cells known as "lymphocytes", that is why T cell are also known as T lymphocytes. The "T" stands for "thymus" -- the small endocrine gland in which these cells mature. It is responsible for a variety of other immune responses.</span>
Answer:
To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating. ... DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases.
Explanation:
