do cfcs break down ozone

Answer:

The resulting liquid at the top is the plasma.

Explanation:

This question seeks to compare the difference between the methods of preparation of plasma and that of serum.

To obtain serum from a blood sample, the blood sample is collected in a plain bottle (usually red capped) and the blot is allowed to clot by leaving it standing/alone for about 15 - 20 minutes after collection. This clotted blood is then centrifugated at 2000 - 3000 revolution per minutes (rpm) for 10 minutes. The liquid at the top after centrifugation here is the serum.

In preparing plasma, the blood sample is collected in a bottle that has anticoagulant like the EDTA bottle (which contains an anticoagulant called EDTA) and then inverted slightly about 7 times to allow the EDTA mix with the blood. This blood sample is then centrifugated at 2000 - 3000 for 15 mins. The resulting liquid at the top is the plasma.

Answer:

α-ketoglutarate; oxaloacetate

Explanation:

In the malate aspartate shuttle, glutamate is converted to α-ketoglutarate in the mitochondria by the enzyme glutamate dehydrogenase while aspartate is converted to oxaloacetate in the cytosol by the enzyme aspartate aminotransferase.

An important enzyme in the malate aspartate shuttle, is malate dehydrogenase. In the shuttle system, it is present in the mitochondria and in the cytosol and catalyzes the enzymatic reaction in opposite direction.

Answer:

8.73

Explanation:

when you are adding or subtracting numbers, the sigfig (significant figure) is based on how many numbers after the decimal. with this info, we can see that 15.67 has 2 sigfigs and 6.943 has 3 sigfigs. when you subtract normally, you would get 8.727, which has 3 sigfigs, so you would round the last 7 up to get 8.73 with 2 sigfigs!

also it is to 2 sigfigs because we know that we go by the least number of sigfigs. hope this helped!

Answer:

1. The behaviour of molecules in different phases of matter represents a balance between the kinetic energies of the molecules and the attractive forces between them. All molecules are attracted to each other. At the same time, all molecules are in constant motion, and their kinetic energies increase with the temperature.

2. When heat is added to a substance, the molecules and atoms vibrate faster. As atoms vibrate faster, the space between atoms increases. The motion and spacing of the particles determines the state of matter of the substance. ... Solids, liquids and gases all expand when heat is added.

Explanation:

A force of 52 N acts upon a 4 kg block sitting on the ground. The acceleration of the object is  13 m/s².

The rate at which velocity changes is called acceleration. Acceleration typically indicates a change in speed, but not necessarily. An item that follows a circular course while maintaining a constant speed is still moving forward because the direction of its motion is shifting.

An object's motion is altered by a net force; the larger the net force, the greater the acceleration. To accelerate at the same rate as less massive objects, higher net forces are needed.

The formula F=ma connects force and acceleration. The letters "F," "m," and "a" stand for force, mass, and acceleration, respectively. A push or pull that one object can apply to another is known as force. The pace at which an object's speed changes is known as acceleration.

Formula for acceleration is

a = f / m

Acceleration = force / mass

= 52N / 4kg

= 13 m/s²

Thus, The acceleration of the object is  13 m/s².

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If an astronaut travels to Mars, the mass of the astronaut will decrease on Mars when she arrives. The correct option is B.

The force of gravity is a force that is responsible for the presence of everything object and human in their place. It gives weight to an object. Without gravity, everyone will be floating in the air.

The force of gravity is different in different places. Like on the earth, there is a strong force of gravitation. On the moon, there is the less gravitational force. In mars, there is less gravitation force than on earth.

Because there is less gravitational force on Mars than on the earth, so the weight of the astronaut will be lower on Mars than on the earth.

Thus, the correct option is B. The mass of the astronaut will decrease on Mars.

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Answer:

1.15 g/mL

Explanation:

The following data were obtained from the question:

Mass (m) = 55.6 g

Volume (V) = 48.5 mL

Density (D) =?

Density is simply defined as the mass of the substance per unit volume of the substance. It is represented mathematically as:

Density (D) = mass (m) /volume (V)

D = m/V

With the above formula, we can obtain the density of the object as follow:

Mass (m) = 55.6 g

Volume (V) = 48.5 mL

Density (D) =?

D = m/V

D = 55.6/48.5

D = 1.15 g/mL

Therefore, the density of the object is 1.15 g/mL

Answer:

true

Explanation:

Answer:

C8H18

Explanation:

To be honest I feel like there is more than one answer but this is the answer I got. You calculate how much is left of carbon and hydrogen in order to balance the equation on the left. Once you got the value you just put it into a polynomial structure and you will get the answer above.

Answer:

[tex]\large \boxed{\mathrm{view \ explanation}}[/tex]

Explanation:

The periodic table of elements is a table consisting of elements arranged by atomic number and properties. There are a total of 118 elements discovered.

Answer:

Periodic table of element is the tabular display of chemical elements which are arranged by atomic numbers, electron configuration and recurring chemical properties

Explanation:

Answer:

D:Cells

Explanation:

A cell is a the smallest unit of a living thing. A living thing whether made up of one cell which is Bacteria and a living thing whether made up of many cells which is Humans

Answer:

[tex] \boxed{ \bold{ \huge{ \bold{ \blue{ \sf{cell}}}}}}[/tex]

Option D is the correct option

Explanation:

[tex] \underline{ \bold{ \underline{ \huge{ \sf{cell}}}}}[/tex]

The bodies of all plants and animals are made up of basic units. These basic units are called cells . Cells carry out different life activities like respiration , growth , digestion, excretion etc. All living organisms are made up of cells. Cells are like the bricks of a house. Cells are also called the building blocks of organisms. They are known as the basic structural and functional units of life . They are the smallest unit of life. Cells were discovered by an English Scientist Robert Hooke in 1665 AD . Cells are very small. We cannot see them with our names eyes. We use an instrument called microscope to see them. The shapes of cells vary. However, cells may be oval , round , tabular, branched , cylindrical or irregular in shape. Similarly , the size can vary from very small to large. Usually, the diameter of cells ranges from 0.5 micron to 151 microns.

Hope I helped!

Best regards!!

Answer:

a

Explanation:

To solve this we must be knowing each and every concept related to  black hole. Therefore, the correct option is option A among all the given option.

A huge star's demise can result in the formation of a black hole. Such a star's core gravitationally collapses inward onto itself near the end of its existence when its internal thermonuclear fuels run out, destroying the star's outer layers in the process.

The dying star is compressed to a point with zero volume or infinite density known as the singularity by the heavy burden of component matter crashing in from all directions.  Astronomers can't take a picture of a black hole because gravity is so strong that even light cannot escape a black hole.

Therefore, the correct option is option A.

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Answer:

Do research on a Particular topic

Answer:

Do research on a particular topic

Answer:

Calculate the amount of solvent needed to prepare 50g of 10% solution of tincture Iodine.

Name the solvent

Explanation:

sodium

Hope it is helpful.....

Answer:

True

Explanation:

Glasswares are glass-made substances that cannot be done without in the laboratory. They are used to hold and store chemicals, conduct chemical reactions etc. Common glasswares include conical flask, beakers, test tubes, volumetric flasks, pipette etc.

These glasswares are sometimes used to hold chemicals that needs to be heated, making the glasswares hot as well. Since they are made of glass materials, they are very fragile and must be handled carefully. One of the precautions when handling a glassware is that after hearing, they must be allowed to cool down slowly at room temperature in order to avoid breakage. Hence, the statement is TRUE.

Answer:

Cardiac output (CO) = 8.54 l / min

Explanation:

Given:

Oxygen consumption (V) = 1.41 l O2/min

Oxygen in arterial (Ca) = 190 ml O2/L = 0.19 l O2/L

Oxygen in venous (Cv) = 25 ml O2/L = 0.025 l O2/L

Find:

Cardiac output (CO)

Computation:

Cardiac output (CO) = V / (Ca - Cv)

Cardiac output (CO) = 1.41 / (0.19 - 0.025)

Cardiac output (CO) = 8.54 l / min

Answer:

it looks like the answer that your looking for is B.

Answer:

B may be the answer.

Explanation:

Answer:

All of these are true

Explanation:

A buffer solution in chemistry is a solution that resists changes in pH when an acid or base is added to it. It is a solution that contains a weak acid and its conjugate base (anion) or a weak base and its conjugate acid.

A buffer is able to resist a change in pH due to the conjugate base and conjugate acid of the weak acids and bases contained in them respectively. The conjugate base/acid are present in an equilibrium quantity with their acid/base counterparts and help to neutralize or react with any additional H+ or OH- from an acid or base added to their solution.

However, when a strong acid or base is added to the buffer solution, there is only a slight change which practically does not change the pH of the solution.

Hence, all of the above options about a buffered solution is true.

On seeing the given options, it is clear that all the options are correct.

A solution, which resists the change in pH upon the supplementation of an acidic or basic components is known as a buffer.

The following are the characteristics of buffer:

Thus, all the given statements are true.

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Answer:

0.000209 decagrams

Explanation:

You calculate 2.09 x 10 micrograms, then you divide that answer by 100,000 to get your final answer. Thus ending up with 0.000209 decagrams.

Answer:

separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.

separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.

Explanation:

Answer:

i think this is [d. phenol]

The correct answer:

Phenol

[tex] \large{ \boxed{ \bf{ \color{green}{Option \: D}}}}[/tex]

Phenol is a compound, While other are elments found under the 17th group, and popularly known as Halogens.

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Answer:

Yes

It is an organic chemical compound

Its formula is [tex]C_6H_6[/tex]

Explanation:

The sun is made up of two main elements, hydrogen and helium.

Answer:

The solar nebula spun faster and faster and flattened into a rotating disk. Most of the gas was pulled toward the center, where it became hot and dense, forming the Sun.

Explanation:

Answer:

Buoyancy.

Explanation:

Buoyancy is a force created by the water that is displaced by an object. It is directly proportional to the amount of water that is being displaced by an object.

Hence, the greater the amount of water an object displaces; the greater is the force of buoyancy pushing the object up.

The buoyancy of an object is given by the formula;

[tex]Fb = pgV\\\\But, V = Ah\\\\Hence, Fb = pgAh[/tex]

Where;

Fb = buoyant force of a liquid acting on an object.

g = acceleration due to gravity.

p = density of the liquid.

v = volume of the liquid displaced.

h = height of liquid (water) displaced by an object.

A = surface area of the floating object.

The unit of measurement for the buoyancy of an object is Newton (N).

Answer:

4km

Explanation:

Answer: 4

Explanation:

the significant figures are 5 0 7 and 2

Answer: 4

Explanation:

To find the significant digits we have few methods.

METHOD 1--Count from left to right

A number that has a decimal point, count digits from the first number from the left that isn't zero.

METHOD 2--Count from right to left

A number that doesn't have a decimal point, count digits from the first number from the right that isn't zero.

-----------------------

It is obvious that 507.2 has a decimal point, so we count from left which we will start with 5.

5, 0, 7, 2

There are 4 digits.

Hope this helps!! :)

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