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
VMariaS [17]
3 years ago
7

If the chemical X-gal is added to nutrient agar, lactose fermenting colonies turn blue, while non-fermenting colonies appear whi

te. What sort of medium is X-gal agar?
Chemistry
1 answer:
xxMikexx [17]3 years ago
6 0

Answer:

C. Differential.

Explanation:

Differential media are bacteriological growth media that contain specific ingredients to allow one to distinguish selected species or categories of bacteria by visual observation. Examples of differential media includes:

Blood agar (used in strep tests) contains bovine heart blood that becomes transparent in the presence of β-hemolytic organisms such as Streptococcus pyogenes and Staphylococcus aureus.

Eosin methylene blue is differential for lactose fermentation.

Streptococcuseosin methylene blue (EMB), which is differential for lactose and sucrose fermentation.

You might be interested in
if you mixed 72.9g hydrochloric acid(aq) with 150g silver acetate(aq), what would be the limiting reagent?​
horsena [70]

Answer:

                      Silver Acetate would be the Limiting Reagent.

Explanation:

                    The balance chemical equation for the given double displacement reaction is as;

                            HCl + AgC₂H₃O₂ → AgCl + HC₂H₃O₂

Step 1: <u>Calculate Moles of Starting Materials:</u>

Moles of HCl:

                      Moles  =  Mass / M.Mass

                      Moles  =  72.9 g / 36.46

                      Moles =  1.99 moles

Moles of AgC₂H₃O₂:

                      Moles  =  150 g / 166.91 g/mol

                      Moles  =  0.898 moles

Step 2: <u>Find out Limiting reagent as:</u>

According to balance chemical equation.

              1 mole of HCl reacts with  =  1 mole of AgC₂H₃O₂

So,

         1.99 moles of HCl will react with  =  X moles of AgC₂H₃O₂

Solving for X,

                     X =  1.99 mol × 1 mol / 1 mol

                     X =  1.99 mol of AgC₂H₃O₂

Hence, to completely consume 1.99 moles of Hydrochloric acid we will require 1.99 moles of Silver Acetate, But, we are provided with only 0.898 moles of Silver Acetate. This means Silver Acetate will consume first in the reaction therefore, it is the LIMITING REAGENT.

8 0
3 years ago
Which of these substances most likely dissolve in water? check all that apply.
vlada-n [284]

The answer is:

glucose, a polar organic compound

silver nitrate, an ionic compound

<span>The two have net charges that enable them to attract with water molecules. Water molecules are partly charged because of the arrangement of electron clouds around the molecule. The oxygen atom in the molecule is more electronegative than the two hydrogens. Therefore water is able to form electrostatic attraction forces with the charged molecules</span>




8 0
3 years ago
What is the formula of Potassium oxide??​
Mashutka [201]
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ The formula for Potassium oxide is K2O

This is because potassium has a 1+ charge and the oxygen has a 2- charge. Two potassium atoms are required to balance the charge.

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

5 0
3 years ago
Read 2 more answers
Which stage of the cell cycle usually lasts the longest
nata0808 [166]
The interphase usually lasts the longest
4 0
3 years ago
Read 2 more answers
Which of the four containers represents a compound?
Arisa [49]
The answer is b)h2o is a compund
4 0
3 years ago
Read 2 more answers
Other questions:
  • What is the resulting pressure when you transfer gas from cylinder with a temperature of 22°C and the pressure of four atm into
    12·1 answer
  • Express (158 lb)2 to three significant figures with appropriate units
    8·2 answers
  • Explain why desert soils tend to be rich in minerals but poor in topsoil
    8·1 answer
  • Why was a condenser not necessary in the final distillation
    10·1 answer
  • What makes hydrogen peroxide a polar molecule?
    11·2 answers
  • How many electrons would be exchanged from lithium and fluorine
    7·1 answer
  • Sulfur dioxide (SO2) is an unwelcome result
    13·1 answer
  • What is reversible and irreversible reaction.​
    6·1 answer
  • Hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii????????????????
    9·2 answers
  • Lucille is finding it difficult to play soccer after school. Her doctor thinks that her cells might not be getting enough oxygen
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!