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riadik2000 [5.3K]
3 years ago
13

Both coal and diamonds are forms of elemental carbon. Coal is brittle while diamonds are considered to be the hardest Of all sub

stances known. What is the appropriate justification for this
Biology
1 answer:
Art [367]3 years ago
8 0

arbon, as with many elements, can arrange its atoms into several different geometries, or "allotropes." In pure diamond, every carbon atom is covalently bonded to exactly 4 other carbon atoms in a very specific and energetically favorable geometry. The diamond cannot be broken or scratched unless many covalent bonds are broken, which is difficult to do. In another common allotrope, graphite, every carbon atom is covalently bonded to only 3 other carbon atoms, and the atoms are arranged in sheets that are not covalently bonded to each other. The sheets can be broken apart easily, ultimately meaning that graphite can be easily scratched. Coal is composed of particles of different allotropes of carbon, and some "amorphous carbon," which has no defined geometry in its atomic structure. Without a continuous network of covalent bonds, coal is easily scratched (i.e. it is not hard).



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In a car accident, ryan sustained significant damage to the acetabulum on the right side. arthroplasty to address this is best d
Digiron [165]

The answer is Total Hip Arthroplasty (THA).

Total hip arthroplasty (THA) is a well-accepted treatment for established hip arthritis following acetabular fractures. If a conservatively treated or operated case progresses to a nonunion/malunion that does not restore  joint integrity, secondary arthritis may eventually develop, warranting  total hip arthroplasty. In addition, in recent years, acute total hip arthroplasty has gained importance in conditions where the fracture occurs with pre-existing hip arthritis, cannot be salvaged by  open reduction and internal fixation or a poor prognosis after hip replacement is expected.

What is an Acetabulum?

  • The hip is one of the  largest joints in the body. It's a "ball joint". The cavity is formed by the acetabulum, which is part of the pelvis. The ball is the femoral head, which is the top of the femur (thigh bone).

How is an acetabular fracture diagnosed?

              Emergency Stabilization

  • Patients with fractures caused by high-energy trauma are almost always referred or presented to an emergency center or emergency department for initial treatment because of the severity of their symptoms.

  • If the fracture is due to high-energy trauma, head, chest, abdominal, or leg injuries may also be present. Significant blood loss can lead to shock, a life-threatening condition that can lead to organ failure.

               Physical Examination

  • Your doctor will perform a full examination of your pelvis, hips and legs. He or she will also check that you can move your ankles and toes and feel  the soles of your feet. In some cases, nerves can be injured at the same time when the acetabulum is fractured.

  • Your doctor will also carefully examine the rest of your body to see if you have suffered any other injuries.

              X-rays

  • These studies provide images of dense structures such as B. Bone. X-rays of acetabular fractures are taken from  different angles to show the fracture pattern and the misalignment of the  bones  (displacement).

  • Computed Tomography (CT) Scans Because of the complex anatomy of the pelvis, a CT scan is often ordered for acetabular fractures. The scan provides your doctor with a more detailed cross-sectional image of your hip and can help with preoperative planning.

to know more about Total Hip Arthroplasty (THA), visit:

https://brainly.in/question/22256711?referrer=searchResults

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4 0
1 year ago
Chemical reactions convert to . In nonliving systems, the presence of a(n) allows the reaction to proceed very quickly and have
Dafna11 [192]
<h2>Answer:</h2>

<u>reactants, </u> <u>products</u>

<u>catalyst</u>

<u>activation energy</u>

<u>enzymes</u>

<h2>Explanation:</h2>

Chemical reactions convert <u>reactants</u> to <u>products</u>. In nonliving systems, the presence of a(n) <u>catalyst </u>allows the reaction to proceed very quickly and have a lower <u>activation energy</u>. In living systems, this function is carried out by proteins called <u>enzymes</u>.

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How meiosis affects chromosome number
dmitriy555 [2]

Answer:

how meiosis affects chromosome number

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Which two body parts are composed of tissue that is made up of muscle cells working together?
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Skeletal muscle – the specialised tissue that is attached to bones and allows movement. Together, skeletal muscles and bones are called the musculoskeletal system (also known as the locomotor system).
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What does it mean when scientists say that living organisms share a universal genetic code?
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I think the mean DNA but don't quote me on that.
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