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4 years ago

Antibiotics are often effective treatments for diseases caused by

Chemistry

1 answer:

otez555 [7]4 years ago

7 0

Answer:

The correct answer is bacteria.

Explanation:

Antibiotics are used in the treatment of bacterial infection.Antibiotics resist bacterial growth by several ways such as1 blocking the formation of peptidoglycan layer of the cell wall of bacteria as a result the bacteria become very much sensitive to osmotic lysis.

2 binding with either ribosomal subunits of bacteria thus preventing the formation of bacterial proteins.

3 blocking metabolic pathways which are essential for the growth of bacteria.

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The actual flow of electrons in the circuit

dmitriy555 [2]

It is C. because there is a positive and a negative end of the battery. electron flow is simply from negative to positive.

6 0

3 years ago

How many sig. figs. are in the following numbers?

klasskru [66]

Answer:

1. 2

2. 1

3. 1

4. 3

5. 3

6. 2

7. 3

8. 1

9. 2

10. 1

11. 3

12. 1

Explanation:

There are 3 main significant figure rules, I suggest looking them up online to confirm these answers

4 0

3 years ago

Which of the following is a form of potential energy?

jok3333 [9.3K]

Answer:

elastic potential energy which is also called spring energy.

4 0

4 years ago

How is beryllium (Be) similar to calcium (Ca)?

timofeeve [1]

C both are very reactive i guess

7 0

4 years ago

g What volume (mL) of the partially neutralized stomach acid was neutralized by NaOH during the titration? (portion of 25.00 mL

Pani-rosa [81]

The question is incomplete, here is the complete question:

What volume (mL) of the partially neutralized stomach acid having concentration 2M was neutralized by 0.01 M NaOH during the titration? (portion of 25.00 mL NaOH sample was used; this was the HCl remaining after the antacid tablet did it's job)

<u>Answer:</u> The volume of HCl neutralized is 0.125 mL

<u>Explanation:</u>

To calculate the concentration of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is HCl (Stomach acid)

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is NaOH.

We are given:

$n_1=1\\M_1=2M\\V_1=?mL\\n_2=1\\M_2=0.01M\\V_2=25mL$

Putting values in above equation, we get:

$1\times 2\times V_1=1\times 0.01\times 25\\\\V_1=\frac{1\times 0.01\times 25}{1\times 2}=0.125mL$

Hence, the volume of HCl neutralized is 0.125 mL

3 0

4 years ago