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Gnoma [55]
3 years ago
15

A miner develops cancer of the esophagus. Ten years before, he had been exposed to radiation when he worked for a year in a mine

. He had also smoked cigarettes for a number of years, but had quit five years ago. Which statement best describes the miner’s condition?
A. Tests can determine whether the cancer was caused by exposure at the mine or by compounds in cigarette smoke so that a treatment can be determined.

B. Cancer caused by exposure at the mine would have appeared while he was at the mine, so smoking is the more likely cause.

C. The cancer is likely the result of natural exposure to radiation in the environment and not related to either the mine or smoking.

D. It is unlikely that a specific cause can be determined, but the treatment would likely be the same in either case.
Chemistry
2 answers:
sashaice [31]3 years ago
4 0

D) It is unlikely that a specific cause can be determined, but the treatment would likely be the same in either case

Salsk061 [2.6K]3 years ago
3 0

Answer:

Option (D).

Explanation:

Cancer can be defined as a progressive disease, which involves uncontrolled cell growth with ability to spread or invade other parts organs of the body. It is resulted due to a number of mutations that lead to change in genetic material and cause destruction of cell cycle regulation.

As the miner had been exposed with both radiation and tobacco, it is quite tough to determined a specific cause for his cancer. This may be due to radiation or smoke or due to other factors.

Although treatment for cancer caused by either way would be same as it will target the cancer cells and kill them by prevent their growth and division.

Thus, the correct answer is option (D).  

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steposvetlana [31]
A non-sandblasted rock could be rough or smooth depending on how it was formed.

A sandblasted rock should be much smoother, since the sand blasts away any rough edges. It will, however, be slightly smaller due to losing those edges.
3 0
2 years ago
Convertible bonds are examples of: a. Securities that have characteristics of both debt and equity b. Non-recurring items c. Ass
iren2701 [21]

Answer:

a. Securities that have characteristics of both debt and equity

Explanation:

A convertible bond is a debt security that can be converted into a certain number of shares and this can be done during specific times in the life of the bond. According to this, convertible bonds are examples of securities that have characteristics of both debt and equity as they are a type of debt that pays interest but can be turned into shares.

5 0
2 years ago
Stirring will A. Increase a reaction B. Decrease a reaction C. Cause no change D. Create a catalyst
lbvjy [14]
A. Increase reaction
8 0
2 years ago
+<br> c)<br> FeCl3 +<br> NH4OH<br> Fe(OH)3<br> NHACI
bixtya [17]

The question is incomplete, the complete question is:

Write the net ionic equation for the below chemical reaction:

(c): FeCl_3+3NH_4OH\rightarrow Fe(OH)_3+3NH_4CI

<u>Answer:</u> The net ionic equation is Fe^{3+}(aq)+3OH^{-}(aq)\rightarrow Fe(OH)_3(s)

<u>Explanation:</u>

Net ionic equation is defined as the equations in which spectator ions are not included.

Spectator ions are the ones that are present equally on the reactant and product sides. They do not participate in the reaction.

(c):

The balanced molecular equation is:

FeCl_3(aq)+3NH_4OH(aq)\rightarrow Fe(OH)_3(s)+3NH_4Cl(aq)

The complete ionic equation follows:

Fe^{3+}(aq)+3Cl^-(aq)+3NH_4^+(aq)+3OH^{-}(aq)\rightarrow Fe(OH)_3(s)+3NH_4^+(aq)+3Cl^-(aq)

As ammonium and chloride ions are present on both sides of the reaction. Thus, they are considered spectator ions.

The net ionic equation follows:

Fe^{3+}(aq)+3OH^{-}(aq)\rightarrow Fe(OH)_3(s)

5 0
3 years ago
How many moles of calcium (Ca) atoms are there in 77.4 g of Ca?
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8 0
3 years ago
Read 2 more answers
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