Answer:
Both:
-They are both made up of cells embedded in an extracellular matrix. It is the nature of the matrix that defines the properties of these connective tissues.
Cartilage:
-Cartilage is thin, avascular, flexible and resistant to compressive forces.
-Cartilages are soft and flexible components present in ear, nose and joints.
Bone marrow:
-Bone is highly vascularised, and its calcified matrix makes it very strong.
-Bones are hard and tough which gives the structural framework of the skeleton in the body.
Answer:
Rate = k [HO2]
Rate constant = 0.8456us-1
Explanation:
Time(us) 0 0.6 1.0 1.4 1.8 2.4
[HO2](uM) 8.5 5.1 3.6 2.6 1.1 1.1
The rate law is given as;
Rate = k [HO2]^x
Where x signify the order of reaction.
For an order of reaction, the rate constant is constant for all concentrations. We are going to use this to obtain the order of reaction.
Zero Order:
[A] = [A]o -kt
5.1 = 8.5 - k(0.6)
-k (0.6) = 5.1 - 8.5
k = 5.67
3.6 = 5.1 - k(0.4)
-k (0.4) = 3.6 - 5.1
k = 3.75
The fact that the rate constant was not constant means the reaction is not a zero order reaction.
First Order:
ln[A] = ln[A]o -kt
(5.1) = ln(8.5) - k(0.6)
-k (0.6) = ln(5.1) - ln(8.5)
k = 0.8524
ln(3.6) = ln(5.1) - k(0.4)
-k (0.4) = ln(3.6) - ln(5.1)
k = 0.8708
ln(2.6) = ln(3.6) - k (0.4)
-k (0.4) = ln(2.6) - ln(3.6)
k = 0.8136
From the three calculations we see that the value of the rate constant is fairly constant in the range of 0.8 This means our reaction is a first order reaction.
The rate law is given as;
Rate = k [HO2]
We can represent the rate constant as the average of the three rate constants calculated above;
Rate constant = (0.8136 + 0.8708 + 0.8524 / 3)
Rate constant = 0.8456us-1
Answer:
a is write
Explanation:
Why are all ionic compounds crystalline in structure?
Ionic compounds are generally hard, but brittle. ... The repulsive forces between like-charged ions cause the crystal to shatter. When an ionic crystal breaks, it tends to do so along smooth planes because of the regular arrangement of the ions.
Answer : As I understand this is question of matching the correct pairs.
So here are the correct pairs.
1) The attraction
between molecules at the surface of a liquid column
---->Surface tension
Surface tension is a phenomenon observed at the <span>surface film of a liquid which is usually caused by the attraction of the particles on the surface layer by the bulk moiety of the liquid, and which tends to minimize its surface area.</span>
2) The energy of
motion
----> Kinetic energy
Kinetic energy is the energy which is possessed by an object due to motion.
3) The movement
of liquids through the spaces of materials
----> Capillary action
Capillary action is defined as<span> the ability of any liquid to flow through the narrow spaces without any of the assistance, or even in opposition to, external force like gravitational force.</span>
4) The overall
movement of suspended or dissolved particles resulting from the random movements
of individual particles
----> Diffusion
Diffusion in liquids can be defined as the random movement of particles which are dissolved or are in suspended state in liquid.
5) Attraction of
one particle in a material for another
----> Cohesion
Cohesion is defined as the attraction between two different particles in a state of matter
6) The
attraction between unlike substances
----> Adhesion
Adhesion is a property of attraction between two unlike substances.
7) A measure oof
the resistance of a liquid to flow
----> Viscosity
Viscosity is the term used to define as the resistivity of liquid to flow.
Answer is: 1130 microliters must be administered.
activity(selenium-75) = 2.3 mCi/mL.
radioactivity(Se-75) = 2.6 mCi; mCi is millicurie.
The curie (symbol: Ci) is a non-SI unit of radioactivity.
V(Se-75) = radioactivity(Se-75) ÷ activity(Se-75).
V(Se-75) = 2.6 mCi ÷ 2.3 mCi/mL.
V(Se-75) = 1.13 mL; volume.
V(Se-75) = 1.13 mL · 1000µL/mL.
V(Se-75) = 1130 µL.
