All categories

3 years ago

What is the pH of a 0.00125 M HCl solution?

Biology

1 answer:

timofeeve [1]3 years ago

4 0

Answer:

$pH=2.9$

Explanation:

Hello,

In this case, the pH is computed by:

$pH=-log([H^+])$

Whereas the concentration of hydrogen ions equals the concentration of the acid for strong acids such as hydrochloric acid (HCl) due to its complete ionization in solution, which means that such concentration is 0.00125 M. Thus, the pH turns out:

$pH=-log(0.00125)\\\\pH=2.9$

Regards.

You might be interested in

What is theory of to observe the neucles in cheek cells

solong [7]

Answer: The theory of cheek cells is used for the identification of cheek cells.

Explanation:

The cells of cheek do not have cell wall. They have a cell membrane which allows on certain molecules to pass through it. The nucleus is located centrally in the cheek cells and it stores the DNA. It can be stained with the help of the methylene blue reagent. It appears blue in color which can be observed under the microscope. The cheek cells can be isolated from the buccal cavity by using cotton buds and cotton swabs can help in isolating the cells.

5 0

3 years ago

________ is the main form in which carbon dioxide is carried in the blood.

V125BC [204]

Carbon dioxide is transported in the blood in three ways: (i) dissolved in solution; (ii) buffered with water as carbonic acid; (iii) bound to proteins, particularly haemoglobin. Source: https://academic.oup.com/bjaed/article/5/6/207/331369

8 0

3 years ago

Which statement best describes what occurs to a molecular of the enzymes trysin after it bind to a molecular of protein

padilas [110]

Trypins breaks down the protien into simple amino acids which are absorbed by the gut wall.

8 0

3 years ago

The concept of endosymbiosis (chloroplast & mitochondria) is widely accepted. What kind of relationship is it?

melamori03 [73]

Answer:

mutualistic

Explanation:

The interaction between two organisms in which both the organism gets benefitted from each other is called a mutualistic relationship. This mutualistic relationship is seen in the concept of endosymbiosis.

According to the endosymbiotic theory chloroplast and mitochondria are evolved by engulfment of different bacteria by ancestral cells. Then these bacterial remained in a mutualistic relationship with each other and the ancestral cell evolved into a eukaryotic cell.

So as mitochondria and chloroplast live with a symbiotic relationship with eukaryotic cells, therefore, it is considered as mutualistic relationship.

4 0

3 years ago

Can somebody help me with #s 4, 5, 6 and 7?<br>I need to make punnett squares.

Aleks [24]

So, one at a time: I'm attaching a picture of the punnet squares (hard to make on the computer (and you can simplify the ratios down):

4. HHnn x hhNN

All offspring are HhNn; 100% same genotype (HhNn); 100% phenotype of short, normal

5. HhNn x HhNn

Genotypes and ratio:

HHNN(1): HHNn(2): HhNN(2):HhNn(4):HHnn(1):Hhnn(2): hhNN(1):hhNn(2):hhnn(1)

Phenotypes and ratio:

Short normal (9): short colorpoint(3):Long normal (3): Long colorpoint (1)

6. TtNn x ttnn

Genotypes and ratio:

TtNn(4):Ttnn(4):ttNn(4):ttnn(4) (which is 1:1:1:1)

Phenotypes and ratio:

Tabby normal (1): Tabby colorpoint (1): Stripless normal (1): stripless colorpoint (1)

7. hhNn x hhNn

hhNN(4): hhNn(8):hhnn(4)

short normal (12): short colorpoint (4)

5 0

3 years ago