1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dezoksy [38]
1 year ago
8

3. A lab technician is preparing urea broth. It should be sterilized by filtration, he autoclaves it instead, just like he does

for any other media. The high temperature of the autoclave causes the urea to break down. What color is the sterile urea broth when it comes out of the autoclave? but rstroedave tocave.
Chemistry
1 answer:
Andreas93 [3]1 year ago
5 0

<u>Urea get decomposed during autoclaving, because it is volatile. It is filter </u><u>sterilized </u><u>and added aseptically to your </u><u>autoclave media.</u>

Can urea be autoclaved?

  • Urea get decomposed during autoclaving, because it is volatile.
  • It is filter sterilized and added aseptically to your autoclave media.

What is autoclave sterilization?

  • In medical and laboratory settings, an autoclave is used to sterilise waste and lab supplies.
  • Heat is used in the autoclave sterilisation process to eliminate bacteria and spores. Pressurized steam provides the heat.

What is filter sterilization?

  • By using filtering, it is possible to exclude organisms based on their size. There are many different kinds of filtration methods, but membrane filtration is utilised to sterilise a system.
  • Contaminants that are larger than the pore size are captured by membrane filtration on the membrane's surface.

Learn more about autoclave media.

brainly.com/question/6211370

#SPJ4

You might be interested in
Calculate the masses of oxygen and nitrogen that are dissolved in of aqueous solution in equilibrium with air at 25 °C and 760 T
shtirl [24]

Explanation:

Let us assume that the volume of given aqueous solution is 7.5 L.

Therefore, according to Henry's law, the relation between concentration and pressure is as follows.

                C = \frac{P}{K_{h}}

where,   pressure (P) = 760 torr = 1 atm

According to Henry's law, constants for gases in water at 25^{o}C are as follows.

  p(O_{2}) = 0.21 atm = 0.21 bar

   p(N_{2}) = 0.78 atm = 0.78 bar

   K_{h} for O_{2} = 7.9 \times 10^{2} bar/mol

    K_{h} for N_{2} = 1.6 \times 10^{3} bar /mol

Since, 21% oxygen is present in air so, its mass will be 0.21 g. Similarly, 78% nitrogen means the mass of nitrogen is 0.78 g.

Therefore, concebtrations will be calculated as follows.

      C(O_{2}) = \frac{0.21}{7.9 \times 10^{2}} = 2.66 \times 10^-4 mol/L  

      C(N_2) = \frac{0.78}{1.6 \times 10^3} = 4.875 \times 10^-4 mol/L

Now, we will calculate the number of moles as follows.

         n(O_{2}) = 7.5 \times 2.66 \times 10^-4 = 1.995 \times 10^-3 mol

         n(N_2) = 7.5 \times 4.875 \times 10^-4 = 3.66 \times 10^-3 mol

As the molar mass of O_2 = 32 g/mol

Hence, mass of oxygen will be as follows.

         Mass of O_2 = 32 \times 1.995 \times 10^-3 \times 1000

                           = 63.84 mg

As the molar mass of N_{2} = 28

       Mass of N_{2} = 28 \times 3.66 \times 10^-3 = 102.5 mg

Thus, we can conclude that mass of oxygen is 63.84 mg  and nitrogen is 102.5 mg.

5 0
3 years ago
Read 2 more answers
Match the following items. Match the items in the left column to the items in the right column. 1. general or nonspecific observ
ivann1987 [24]
when column B is like the attached pic: (missing in your question)

so the matches will be like that:

1- Qualitative :

as Qualitative is a general or nonspecific observation, they also don't require

measurements and even can't be measured, that is because of the reality is

being approximated only. It  describes qualities and uses opinion

2- Hypothesis : 

as a hypothesis is an educated guess quantitative, and it is a prediction stated

in " If and then " form. a hypothesis to be valid need a research such as:

-Encyclopedia & state and local research facilities & scientific journals.

3- Direct relationship:

as a Direct relationship is when two variable change in the same direction,

and one remaining larger than the other by the same factory.  

- this is a type of a relationship in which there is a change with one variable, and corresponding with the change in the other. and because this corresponding change with the other variable in the same direction so it refers to a positive relationship. 

4- Quantitative:

as Quantitative is a measured observation, It's an information or data based

on quantities obtained. And using numbers, equipment and standard units.

5- Control :

as control is standard, reference data or experiment qualitatively. this is what

you compare your experimental results to. This is for comparing results, it

used as a standard for comparison and use baseline measurements to use in

the comparing.

6- Theory :

 as Theory is a presently accepted explanation of how something happened.

 Scientifically acceptable general principles to explain phenomena. It the

general or abstract principles of the science. for example the  wave theory of

light.

7- Law :

as a law is a statement that explains what something does under the same

conditions. when we take about law in science, it is a general rule to explain

the observations in the form of a mathematical statement. Scientific law may 

be stated in words or expressed as a mathematical equations.

8- Best fit curve:

as best fit curve is a curve drawn to average the data's deviations direct

relationship. It is a process of constructing a curve that has best fit to a

series of data points. 

7 0
3 years ago
What is the molarity when 0.181 moles of MgNO3)2 are dissolved in enough water to make 0.750 L solution?
eimsori [14]

Answer:

Molarity = 0.24 M

Explanation:

Given data:

Number of moles of Mg(NO₃)₂ = 0.181 mol

Volume of solution = 0.750 L

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

by putting values,

Molarity = 0.181 mol / 0.750 L

Molarity = 0.24 M

4 0
2 years ago
An aqueous solution containing 35.5 g of an unknown molecular (non-electrolyte) compound in 151.0 g of water was found to have a
Tasya [4]

ccccccccccccccccccccccccccccccccccc

8 0
3 years ago
HCI + NaOH --&gt; NaCl + H 20
Vikki [24]

Answer:

option D is correct

Explanation:

no of moles in 3 grams of HCL=3/36=0.08

if 1 mole of HCL require 1 mole of NaOH then 0.08 moles required 0.08 moles of NaOH

mass of 0.08 moles of NaOH=moles*molar mass=0.08*40=3.2 grams

so 3 grams are required in the reaction

6 0
2 years ago
Other questions:
  • Which is an example of a heterogeneous mixture? <br>A coffee<br>B soil<br>C gelatin<br>D air
    14·1 answer
  • Is the following sentence true or false? the mass of an object changes with location.
    7·1 answer
  • Study ISLAND OLEASE HELPP
    13·1 answer
  • How did robert hooke contribute to the cell theory?
    5·1 answer
  • An atom that undergoes radioactive decay and has a large nucleus most likely contains
    12·2 answers
  • What are the IUPAC names of the following ?
    11·1 answer
  • Explain the process of photosynthesis.
    11·1 answer
  • State the relationship between phase changes and heat energy.<br> In complete sentences
    9·2 answers
  • 3. Plants grow best when it is not too hot or too​
    13·1 answer
  • If a reaction mixture contains 24 g of Mg and 32 g of O2 , what is the limiting reactant?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!