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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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What pH value can be assigned to acids and bases, respectively?
goldfiish [28.3K]
Acids have a pH less than 7 (pH < 7)
Bases have a pH more than 7 (pH > 7)
A pH of 7 would be neutral

Hope this helped!
5 0
4 years ago
What atom has the largest atomic radius barium calcium magnesium radium
iogann1982 [59]

Answer:

Radium

Explanation:

It has the highest atomic number so it would have more shells, making it larger than the others.

6 0
3 years ago
The pressure of 8.40 L of nitrogen gas in a flexible container is decreased to one-half its original pressure, and its absolute
ollegr [7]

Answer:

33.6 L

Explanation:

From the question given above, the following data were obtained from:

Initial volume (V1) = 8.40 L L

Initial pressure (P1) = P

Initial temperature (T1) = T

Final pressure (P2) = one-half the original pressure = ½P

Final temperature (T2) = double the original temperature = 2T

Final volume (V2) =.?

Thus, the new volume of the gas can be obtained as follow:

P1V1/ T1 = P2V2 /T2

P × 8.40 / T = ½P × V2 /2T

P × 8.40 / T = P × V2 / 4T

Cross multiply

T × P × V2 = P × 8.40 × 4T

Divide both side by T × P

V2 = (P × 8.40 × 4T) /T × P

V2 = 8.40 × 4

V2 = 33.6 L

Thus, the new volume of the gas is 33.6 L

7 0
3 years ago
A rigid cylinder with a movable piston contains a sample of gas. At 300. K, this sample has a pressure of 240. Kilopascals and a
iren [92.7K]

Answer:

The volume of this sample when the temperature is changed to 150 K and the pressure is changed to 160 kPa is 52.5 mL.

Explanation:

Boyle's law says that: "The volume occupied by a certain gaseous mass at constant temperature is inversely proportional to pressure" and is expressed mathematically as:

P * V = k

where k is a constant.

Charles's Law consists of the relationship that exists between the volume and the temperature of a certain quantity of ideal gas, which is maintained at a constant pressure, by means of a constant of proportionality that is applied directly. So Charles's law is a law that mathematically says that when the amount of gas and pressure are kept constant, the quotient that exists between the volume and the temperature will always have the same value:

\frac{V}{T}=k

Gay-Lussac's law states that the pressure of a fixed volume of a gas is directly proportional to its temperature. In other words, if the volume of a certain quantity of ideal gas remains constant, the quotient between pressure and temperature remains constant:

\frac{P}{T}=k

Combined law equation is the combination of three gas laws called Boyle's, Charlie's and Gay-Lusac's law:

\frac{P*V}{T}=k

Considering an initial state 1 and a final state 2, it is satisfied:

\frac{P1*V1}{T1}=\frac{P2*V2}{T2}

In this case:

  • P1: 240 kPa
  • V1: 70 mL
  • T1: 300 K
  • P2: 160 kPa
  • V2: ?
  • T2: 150 K

Replacing:

\frac{240 kPa*70 mL}{300 K}=\frac{160 kPa*V2}{150 K}

Solving:

V2=\frac{150 K}{160 kPa} *\frac{240 kPa*70 mL}{300 K}

V2= 52.5 mL

<u><em>The volume of this sample when the temperature is changed to 150 K and the pressure is changed to 160 kPa is 52.5 mL.</em></u>

6 0
3 years ago
Read 2 more answers
How do the small bodies in the solar system differ from one another?
sweet [91]

Answer:

Our Solar System may be home, but researchers are now discovering that it's not really much like the other kids. According to a survey of 909 planets orbiting 355 stars, our home planetary system is a little on the dishevelled side - and others are a lot more orderly.

Explanation:

4 0
3 years ago
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