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
lora16 [44]
3 years ago
6

essie is working with a 100% stock concentration of Clorox. She decides to add 150 µL of bacteria to a tube containing 2 mL of n

utrient broth and then adds 200µL of the Clorox stock to the tube as well. What is the unknown concentration of the tube?
Biology
1 answer:
Andrews [41]3 years ago
7 0

Answer:

8.5%

Explanation:

The unknown final concentration can be found out by the dilution formula C1V1 = C2V2

where,

C1 = Starting concentration = 100%

V1 = Starting volume = 200μL

C2 = Final concentration

V2 = Final volume = 2350μL ( 2000 + 150 + 200 )

So,

100 * 200 = C2 * 2350

C2 = (100 * 200) / 2350

= 20000 / 2350

= 8.5%

You might be interested in
What is the ethical value of using a model organism, such as zebrafish for doing marine research on pathogens?
d1i1m1o1n [39]

Answer: The Answer is C

Explanation: I took the test

7 0
4 years ago
Read 2 more answers
Prior to discharging an infant with congenital hypothyroidism to home with the parents, what should the nurse emphasize regardin
Arte-miy333 [17]
I would say that this child may need iodine drops as it may be deficient in this or perhaps a synthroid type medication. Also, it may be wise for such a child to run on a treadmill about 3x per week as this raises the metabolic rate since it is cardiovascular activity.
4 0
3 years ago
What is the value of transitional epithelium in the urinary system? It provides cushioning. It protects against trauma. It allow
Elenna [48]

Answer:

The correct answer is- It allows distension

Explanation:

Transitional epithelium is a specialized type of stratified epithelium. Multiple layers of epithelial cells are present in the transitional epithelium which can change their shape according to the condition which allows them to dilate, contract, stretch and allow detention.

Organ of the urinary system is lined by this epithelium because they need to stretch and contract in order to function. This allows the urinary bladder to hold a large amount of urine and it. Therefore the correct answer is - It allows distension.

6 0
3 years ago
Which of these is an abiotic factor of an aquarium ecosystem?
Levart [38]
So abiotic means nonliving, so the only abiotic option is B. the gravel on the bottom of the aquarium.
8 0
3 years ago
The cloning of plant cells is dependent upon which process?
slava [35]
Mitosis which is the reproduction of cells.
8 0
4 years ago
Other questions:
  • How did photosynthesis and cellular respiration affect Earth's atmosphere​
    5·1 answer
  • What is the pastry turnover with meat filling that is a popular stuffed food in argentina called?​?
    13·1 answer
  • Genes are located in which part of the cell
    14·2 answers
  • All of the following statements referring to the uterine cycle are true EXCEPT ________. A) FSH and LH directly promote developm
    8·1 answer
  • What is the human genome project
    11·1 answer
  • Methane is a(n) gas. Excess of methane in the atmosphere will lead to .
    15·1 answer
  • between the first and second gene, and between the second and third gene.h+ one head (dom), h two heads (rec) e+ long ears (dom)
    10·1 answer
  • An ecosystem has experienced a flood. Which type of plants would you expect to see growing first after the flood?
    6·2 answers
  • PLEASE ASNWER AS FAST AS POSSIBLE.
    11·1 answer
  • Someone please help soon !!
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!