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Mashcka [7]
3 years ago
7

Which two structures play direct roles in permitting bacteria to adhere to each other or to other surfaces?

Chemistry
1 answer:
ICE Princess25 [194]3 years ago
4 0

Answer: capsule and fimbriae

Explanation:

Many prokaryotes have sticky outermost layer called the capsule.It is made up of polysaccharides and it helps them clinging to each other or to other surfaces around them.It also helps prevent the cell from drying out.

Fimbriae,also known as attachment pilus,used by bacteria to adhere to one and other,animal cells or to any inanimate objects.

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If 0.250 mol of hydrogen gas occupies 0.333L at 20.0c what is the pressure in atmospheres?
maria [59]

Answer: The pressure will be 18.05 atm.

Explanation: Expression for ideal gas equation is :

PV=nRT

where,

P = Pressure of the gas = ? atm

V = Volume of the gas = 0.333L

n = Number of moles of gas = 0.250 moles

R = Universal gas constant = 0.082057\text{ L atm }mol^{-1}K^{-1}

T = temperature of the gas = 20°C = (273 + 20)K = 293K

Putting values in above equation, we get:

P\times 0.333L=0.250mol\times 0.082057\text{ L atm }mol^{-1}K^{-1}\times 293K

P = 18.05 atm

8 0
3 years ago
What volume of 0. 250 m sulfuric acid solution would be needed to react completely with 18. 00 ml of 0. 350 m ammonia solution?
PolarNik [594]

The volume of 0. 250 m sulfuric acid solution would be needed to react completely with 18. 00 ml of 0. 350 m ammonia solution is 0.0504 L.

The balance reaction is 2KOH+H_{2} SO_{4}=2H_{2} O+K_{2} SO_{4}

This shows us that we need 2 moles of KOH for each mole of sulfuric acid.

So, we write mathematically 2*(0.018*0.350)=(V*0.250)

V=(2*0.018*0.350)/0.250=0.0504 L

<h3>Sulfuric acid</h3>

With the chemical formula H2SO4, sulfuric acid, also known as sulphuric acid or oil of vitriol, is a mineral acid made up of the elements hydrogen, oxygen, and sulfur. It is a viscous liquid that is miscible with water and is colorless, odorless, and viscous.

Since pure sulfuric acid has a significant affinity for water vapor, it does not naturally occur on Earth; as a result, it is hygroscopic and rapidly collects water vapor from the atmosphere. Due to its potent dehydrating and oxidizing qualities, concentrated sulfuric acid is extremely corrosive to various materials, including rocks and metals. One significant exception is phosphorus pentoxide, which dehydrates sulfuric acid to sulfur trioxide instead of being dehydrated by sulfuric acid.

Learn more about Sulfuric acid here:

brainly.com/question/1107054

#SPJ4

6 0
2 years ago
Which of the following is true about a carbonated soft drink?. . The carbon dioxide is the solvent, and water is the solute.. .
V125BC [204]

Answer:

The water is the solvent and the Carbon Dioxide is the Solute

Explanation:

The Carbon Dioxide is being dissolved into the Water. Solute is what is being dissolved, Solvent is what is doing the dissolving

7 0
3 years ago
If the mass of an object is 6 lbm, what is its weight, in lbf, at a location where g = 32.0 ft/s2?
Solnce55 [7]

Using formula:

w = m\times g   -(1)

where w is weight of object,

m is mass of the object, and

g is the acceleration of gravity.

mass, m = 6 lbm (given)

acceleration of gravity, g = 32.0 ft/s^{2} (given)

Now, substituting the values in equation (1):

w = 6 lbm \times 32 ft/s^{2} = 192 lbmft/s^{2}

Since, 1 lbf = 32.174 lbm ft/s^{2}

So, w = 192\times \frac{1}{32.174 lbf}

w = 5.976 lbf

Hence, the mass of an object is 5.976 lbf.

8 0
3 years ago
NEED ANSWERS FAST - WILL GIVE BRAINLIEST
Pie

Answer:

The answer to your question is below

Explanation:

2)

                    1Na₂S  +  1CaSO₄   ⇒   1Na₂SO₄  +  1CaS

             Reactans               Elements           Products

                   2                             Na                      2

                   2                               S                       2

                   1                               Ca                      1

                   4                               O                       4

3)            3LiNO₃  +  1Na₃PO₄    ⇒    1Li₃PO₄  +  3NaNO₃

           Reactants             Elements           Products

                  3                         Li                          3

                  3                          N                          3

                 13                          O                        13

                  3                         Na                         3

                   1                          P                           1

4)            1(NH₄)₂CO₃   +   1MgSO₄  ⇒    1(NH₄)₂SO₄  +   1MgCO₃

            Reactants              Elements              Products

                   2                           N                             2

                   8                           H                             8

                    1                           C                              1

                   7                           O                             7

                    1                           Mg                            1

                    1                            S                              1

5)           1Ca(OH)₂  +  1Na₂CO₃    ⇒    2NaOH  +  1CaCO₃

               Reactants           Elements            Products

                     1                          Ca                        1

                     5                          O                        5

                     2                          H                         2

                     2                          Na                       2

                     1                           C                          1

                 

8 0
3 years ago
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