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
777dan777 [17]
3 years ago
12

What weight of Tris-HCL (MW=121) is required to prepare 2L of a 15% w/v solution?

Biology
1 answer:
podryga [215]3 years ago
7 0

Explanation:

Percentage w/v means that weight of solute present in 100 ml of a solution. Hence, 15% w/v means that 15 gram of solute per 100 ml of solution.

Hence, for 2 L (or 2000 mL) preparation the amount of mass will be calculated as follows.

                 \frac{15 g}{100 ml} \times 2000 ml

                  = 300 g

Thus, we can conclude that weight of Tris-HCL required is 300 g.

You might be interested in
A scientist finds fossils of several different species of fish on top of a mountain. What do these findings most strongly sugges
myrzilka [38]

Answer:

Scientists have found fossils of whales and other marine animals in ... When these animals died from 15 million to 20 million years ago, their ... In geological terms, the time the fossils took to rise from ocean floor to mountain top was ... In more recent sediments, the group found species related to modern .

Explanation:

5 0
3 years ago
Which bacterial sti causes more complications in women than in men?
MrMuchimi

The correct answer is option (A) Chlamydia.

A typical sexually transmitted illness is chlamydia. Both men and women are susceptible. However, compared to men, women are typically more negatively impacted by its consequences.

Symptoms and reasons for Chlamydia

  • Chlamydia symptoms are sometimes mistaken for those of other diseases that afflict women.
  • Some signs, such vaginal ulcers, are difficult to see, making the infected unaware that they have the disease.
  • If addressed, this can result in even more serious issues including pelvic inflammatory disease, which then might have an impact on fertility.
  • It may harm a woman's reproductive system permanently. Later it becomes challenging for women to get pregnant as a result. Additionally, chlamydia can result in an ectopic pregnancy that may be fatal.

To know more about sexually transmitted illnesses visit:

brainly.com/question/28099213

#SPJ4

5 0
11 months ago
The study of the nature, structure, function, and diseases of the muscles is:
ICE Princess25 [194]
That would be myology. Myology is the study of the muscular system, wlong with its nature, structure, functions and diseases. It mainly deals with the three types of muscles found in the human body: skeletal muscles, smooth muscles, and cardiac muscles. Muscles are also categorized depending on whether or not they are voluntary or involuntary. Myology is concerned with the study of all this and much more.
6 0
3 years ago
1. Describe how pigments in the chloroplast play a role in coloring the plant and in producing energy.
kirza4 [7]

Answer:

Hello There!!

Explanation:

The purpose of the chloroplast is to make sugars that feed the cell's machinery. Photosynthesis is the process of a plant taking energy from the Sun and creating glucose. When the energy from the Sun hits a chloroplast and the chlorophyll molecules, light energy is converted into the chemical energy.

hope this helps,have a great day!!

~Pinky~

4 0
2 years ago
What state best describes natural selection
baherus [9]

Answer:

Louisianna

Explanation:

8 0
3 years ago
Other questions:
  • Use the terms chloroplast and organelle in a sentence that describes cell function.
    8·1 answer
  • Which of the following statements is considered true of Neanderthals?
    15·2 answers
  • What is an accessory organ of digestion
    14·1 answer
  • What molecules make-up the sides of a dna molecule
    5·1 answer
  • If there is a first- and second-degree burn of the same area, you would report:
    15·1 answer
  • The key to understanding human behavior, according to Sigmund Freud, was to focus on __________ and the __________ level of the
    8·1 answer
  • The combining form cutane/o-,as in the word subcutaneous,means ________.
    15·1 answer
  • Which type of energy is stored in fuels such as gasoline and batteries?
    7·2 answers
  • Need help asap please
    15·2 answers
  • microorganisms occur everywhere in nature and have several requirements to grow. what is one of these requirements? select all t
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!