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ycow [4]
3 years ago
9

When an antimicrobial agent permanently denatures proteins thus preventing renaturation to their native states it is considered:

Select one: a. bacteriostatic b. bacterial lysis c. an inhibitor of growth d. bactericidal
Chemistry
1 answer:
Katen [24]3 years ago
7 0

Answer:

The correct option is d, bactericidal

Explanation:

Antimicrobial agent that kill bacteria are called bactericidal and hence, prevents the growth of bacteria.

Antimicrobial agent that slows the growth of the bacteria called bacteriostatic.

Bactericidal and bacteriostatic are types of antibiotics.

Bactericidal antibiotics act by inhibiting cell wall synthesis. Penicillin, cephalosporins, vanomycin, etc are some of bactericidal antibiotics.

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To interconvert the concentration units molality (m) and mass percent, you must also know the density of the solution. A) True B
uranmaximum [27]

Answer:

The correct answer is option false.

Explanation:

Molality of the solution defined as moles of substance present in 1 kilogram of   solvent.

Moles = \frac{Mass of solute}}{\text{molar mass of solute}}

Molality=\frac{Moles}{\text{Mass of solvent(kg)}}

Mass of percent (w/w%) of the solution is defined as amount of solute present in 100 grams of solution.

(w/w\%)_=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100

So, if want to inter-convert molality into mass percent we can do that without knowing density of solution.

Mass of solution = Mass of solute + Mass of solvent

7 0
3 years ago
Why is it NOT possible for ONE particle (atom/ion/molecule) to be classified as a particular phase, or state, of matter?
Agata [3.3K]

Answer:

because I said and I'm the boss

6 0
3 years ago
If 0.089 grams of KI is dissolved in 500g of H2O, what is the concentration of the resulting solution in parts per million?
frez [133]

Answer:

The concentration of the resulting solution in parts per million is 177.97

Explanation:

Parts per million (ppm), is a unit of measure for concentration that refers to the number of units of the substance per million units of the set.

The concentration in parts per million expressed in mass / mass is calculated by dividing the mass of the solute (ms) by the mass of the solution (md, sum of the mass of the solute and the mass of the solvent), both expressed in the same unit and multiplied by 10⁶ (1 million).

ppm=\frac{ms}{md} *10^{6}

So, being:

  • ms: 0.089 grams of KI
  • md: 0.089 grams of KI + 500 grams of H₂O= 500.089 grams

Replacing:

ppm=\frac{0.089 grams}{500.089 grams}*10^{6}

ppm= 177.97

<u><em>The concentration of the resulting solution in parts per million is 177.97</em></u>

6 0
3 years ago
Your blood contains 2 L of Nitrogen at 1 atm. When you go scuba diving at the Great Barrier Reef, the pressure increases to 8.7
trasher [3.6K]

Answer:

Divers breathe compressed air that contains nitrogen. At higher pressure under water, the nitrogen gas goes into the body's tissues. ... Nitrogen narcosis: Deep dives can cause so much nitrogen to build up in the brain that you can become confused and act as though you've been drinking alcohol.Oxygen becomes rapidly toxic at depth – prolonged exposure to pure oxygen below a few metres can kill you. It is not an appropriate scuba tank gas mixture. ... Oxygen is also highly reactive and can make other substances flammable. Safety training is necessary to work with pure oxygen.

Explanation:

I hope this helped,i m sorry if its not the exact answer you need.

6 0
3 years ago
Which chemical agent is thought to be associated with "runner's high"?
Licemer1 [7]
Opioid's tend to show during runners high, so my guess would most likely be dopamine
6 0
3 years ago
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