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Nonamiya [84]
3 years ago
11

Select the common uses of radioactive elements in health care.

Chemistry
2 answers:
frez [133]3 years ago
7 0
I believe that it is Soft tissue images and Treatment of cancer.(technically antibiotic us is correct for the treatment of cancer, but I am going on a limb and saying it is not.)
gogolik [260]3 years ago
4 0

Here are some of the many uses of radioactive elements in health care.

1) Soft tissue imaging

Health professionals use radioactive ¹⁸F in positive emission tomography (PET) scans to PET to detect and evaluate most cancers and to provide images of the heart and brain.

2) Diagnosis of disease

Health professionals use radioactive ¹³¹I to diagnose thyroid disorders.

3) Antibiotics

Biochemists use radioactively labelled antibiotics to determine how they are used and metabolized by the body.

4) Treatment of cancer

Health professionals use ¹³¹I to treat certain types of thyroid cancer. They also use ⁸⁹Sr, ¹⁵³Sm, and ²²³Ra to treat various types of bone cancer.

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Pepsi [2]
15 kilogram of the rock must be processed.
6 0
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2. How will the equilibrium shift if the following changes are made? State if the reaction will shift
Kamila [148]

Please give me brainleist. :)

Answer:

2a. If the temperature is increased, the reaction will shift to the right in an attempt to release some of the heat. As the forward reaction loses heat while the reverse would create more heat.

2b. If the pressure is increased, it would shift to the left to counteract the increase in pressure as the left side will have fewer molecules.

2c. If Cl2 is added the reaction will shift to the left in order to remove the stress of the extra Cl2 and favor the production of more reactant.

2d. If PCl3 is removed, the reaction will shift to the right. When part of the equation is removed the reaction learns to adapt to the loss by trying to make more Pcl3 and counteract the effects of losing the PCl3.

3a. The reaction will shift to the right to produce more heat and counter the negative effects of losing the heat.

3b. It will shift to the left to get rid of the excess HCl being produced and form more reactant from the breakdown of the HCl.

3c. It would shift to the right in order to get rid of the excess form products from it.

3d. If pressure is decreased there will be no effect on the shift of the reaction because there is an even amount of moles of gas on each side.

4a. K=[N2O4(g0] / [NO2(g)]2

4b. (Below)

K=[N2O4(g)] / [NO2(g)]2

0.4 / 0.5(2)

0.4/0.25 = 1.6

Keq= 1.6

7 0
3 years ago
Electricity generated from any source comes with its own advantages and disadvantages. So, no source of energy for generating el
irakobra [83]

Answer:

Wind energy

An ideal source of energy needs to be reliable, cost effective, safe and must lead to almost zero adverse environmental impact.

Wind energy is energy obtained from air moving at high velocity. This energy is harvested using windmills which convert mechanical energy to electrical energy.

Wind is inexpensive because it occurs naturally. However, a large expanse of land is required in order to mount sufficient number of windmills that will generate enough electrical energy for practical purposes.

This method of electricity generation is safe and does not lead to any environmental hazard unlike the burning of fossil fuels, use of nuclear energy or loss of habitat due to hydroelectric power generation.

Explanation:

6 0
3 years ago
3S8 + 8 OH- + 8 S3 + 4 HOOH
NemiM [27]

Answer:

Second order

Explanation:

We could obtain the order of reaction by looking at the table very closely.

Now notice that in experiment 1 and 2, the concentration of [OH^-] was held constant while the concentration of [S8] was varied.  So we have;

a situation in which the rate of reaction was tripled;

0.3/0.1 = 2.10/0.699

3^1 = 3^1

Therefore the order of reaction with respect to  [S8] is 1.

For [OH^-], we have to look at experiment 2 and 3 where the concentration of [S8] was held constant;

x/0.01 = 4.19/2.10

x/0.01 = 2

x = 2 * 0.01

x = 0.02

So we have;

0.02/0.01 = 2^1

2^1 = 2^1

The order of reaction with respect to  [OH^-] = 1

So we have the overall rate law as;

Rate = k[S8]^1  [OH^-] ^1

Overall order of reaction = 1 + 1 = 2

Therefore the reaction is second order.

4 0
3 years ago
When a sample of purified phospholipids is mixed with water, spherical structures called liposomes form.
lutik1710 [3]

Answer:

B). The edges of lipid bilayers sheets fold back on themselves, forming a hollow sphere which releases the ordered waters at the edges.

C) The hydrophobic effect drives aggregation of phospholipids in an aqueous solution.

E) The cross-sectionalarea of the headgroups and acyl chains in the phospholipids are similar

Explanation:

A liposome is simply a tiny bubble also referred to as vesicle that is gotten from the same material as the one a cell membrane is made from. It should be noted that liposomes can be filled with drugs, and then used in the delivery of drugs for diseases such as cancer etc.

Phospholipids afford fluidity, permeability and stability to neural membranes. They're also vital for proper functioning of the receptors, integral membrane proteins, and the ion channels.

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• The edges of lipid bilayers sheets fold back on themselves, forming a hollow sphere which releases the ordered waters at the edges.

• The hydrophobic effect drives aggregation of phospholipids in an aqueous solution.

• The cross-sectionalarea of the headgroups and acyl chains in the phospholipids are similar

3 0
4 years ago
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