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2 years ago

__________ is the use of high energy radiation to kill cancer cells.

Chemistry

2 answers:

Ainat [17]2 years ago

5 0

Answer:

Radiation therapy is the use of high energy radiation to kill cancer cells.

Nadusha1986 [10]2 years ago

3 0

Answer:

Radiation Therapy.

Explanation:

Also known as radiotherapy, it uses high-energy radiation to damage and/or kill cancer cells.

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Select the atomic models that belong to the same element. YOU MUST PICK TWO!

Sergio [31]

Answer:

Model 2 and model 3

Explanation:

Both atomic models represent hydrogen, which consists of one proton in the nucleus. Both atomic models consists of 1 proton, which means that both their atomic numbers are equal to 1

5 0

2 years ago

Determine the total mass of ethanol produced when 270 g of glucose reacts completely to form ethanol and 132 g of carbon dioxide

Mekhanik [1.2K]

Answer:

138g

Explanation:

270g-132= 138g

4 0

3 years ago

Find the pH of 2.1 x 10-3 [HCI]

erik [133]

Answer: pH = 2.68

Explanation: pH = - log[H3O^+] .

HCl reacts with water : HCl + H2O -> Cl^- + H3O^+

So [H3O^+] = c(HCl) = 0.0021 M

pH = - log(0.0021) = 2.68

7 0

3 years ago

Atmospheric pressure at sea level is equal to a column of 760 mm Hg. Oxygen makes up 21 percent of the atmosphere by volume. The

Neporo4naja [7]

Answer: The partial pressure of oxygen is 160 mmHg

Explanation:

We are given:

Percent of oxygen in air = 21 %

Mole fraction of oxygen in air = $\frac{21}{100}=0.21$

To calculate the partial pressure of oxygen, we use the equation given by Raoult's law, which is:

$p_{O_2}=p_T\times \chi_{O_2}$

where,

$p_{O_2}$ = partial pressure of oxygen = ?

$p_T$ = total pressure of air = 760 mmHg

$\chi_{O_2}$ = mole fraction of oxygen = 0.21

Putting values in above equation, we get:

$p_{O_2}=760mmHg\times 0.21\\\\p_{O_2}=160mmHg$

Hence, the partial pressure of oxygen is 160 mmHg

8 0

4 years ago

Phosphorous would gain or lose electrons?

devlian [24]

Answer: the valence electron for phosphorus is 5. To achieve an octet electron arrangement, it needs to lose 5 electrons or gain 3 electrons. It is easier to gain 3 electrons than to lose 5 electrons. So phosphorus has to gain 3 electrons.

Explanation:

Hope it helps sorry if it doesn't

4 0

3 years ago