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2 years ago

Which colorless and odorless gas, produced by radioactive decay of Uranium-238, is considered to be a cancer-causing agent?

1 answer:

7 0

B, radon is correct. Interestingly, it often collects in basements from radioactive decay of rocks such as granite that contain uranium. Because it is an unreactive noble gas and because it is denser than air it sits in basements and must be pumped out. It collects in human lungs and is the second leading cause of lung cancer behind smoking.

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The table lists properties of a few known elements, but the states of matter and melting points are missing. Look up the element

kolbaska11 [484]

The properties of the given elements are as follows:

Potassium, K;

State of matter: Solid
Melting point: 63.5 °C
Conductivity: Good
Solubility (H2O): reacts rapidly with water

Iodine, I;

State of matter: solid
Melting point: 113.5 °C
Conductivity: very poor
Solubility (H2O): negligible

Gold, Au;

State of matter: solid
Melting point: 1064 °C
Conductivity: excellent
Solubility (H2O): none

Germanium, Ge;

State of matter: solid
Melting point: 938.2 °C
Conductivity: fair
Solubility (H2O): none

Barium, Ba;

State of matter: solid
Melting point: 727 °C
Conductivity: good
Solubility (H2O): reacts strongly

Argon, Ar;

State of matter: gas
Melting point: -189.4 °C
Conductivity: none
Solubility (H2O): negligible

Chlorine Cl;

State of matter: gas
Melting point: -101.5 °C
Conductivity: poor
Solubility (H2O): slight

Rubidium, Rb;

State of matter: solid
Melting point: 39.48 °C
Conductivity: good
Solubility (H2O): reacts violently

Silver, Ag;

State of matter: solid
Melting point: 961.8 °C
Conductivity: excellent
Solubility (H2O): none

Calcium, Ca;

State of matter: solid
Melting point: 842 °C
Conductivity: good
Solubility (H2O): reacts

Silicon, Si;

State of matter: solid
Melting point: 1,410 °C
Conductivity: intermediate
Solubility (H2O): none

Xenon, Xe;

State of matter: gas
Melting point: -111.8 °C
Conductivity: very poor
Solubility (H2O): none

<h3>What are elements?</h3>

Elements are pure substances which are composed of similar atoms.

Elements are defined as substances which cannot be split into simpler substances by an ordinary chemical process.

Elements have different physical and chemical properties and can be classified into:

metals
semi-metals
non-metals

In conclusion, the physical and chemical properties of the elements vary from metals to non-metals.

Learn more about elements at: brainly.com/question/6258301

#SPJ1

7 0

8 months ago

5. What are Opioids?

Alex_Xolod [135]

The answer to your question is the first one!

6 0

2 years ago

You can practice converting between the mass of a solution and mass of solute when the mass percent concentration of a solution

vfiekz [6]

Answer:

450. g of 0.173 % KCN solution contains 779 mg of KCN.

Explanation:

Mass of the solution = m

Mass of the KCN in solution = 779 mg

Mass by mass percentage of KCN solution = 0.173%

$(m/m)\%=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 100$

$0.173\%=\frac{779 mg}{m}\times 100$

$m=\frac{779 mg}{0.173}\times 100= 450,289 mg$

1 mg = 0.001 g

m = 450,289 mg × 0.001 g = 450.289 mg ≈ 450. g

450. g of 0.173 % KCN solution contains 779 mg of KCN.

6 0

2 years ago

The reaction of hemoglobin with oxygen can be written as follows. hb + o2 â hbo2 if the amount of oxygen available to the blood

riadik2000 [5.3K]

Oxygen is needed to carry out a lot of biochemical processes in the body. If the amount of oxygen available to the blood decreases significantly a lot of things will go wrong in the body. For instance, lack of adequate oxygen will lead to the death of neurons which will eventually leads to brain cells death and irreparable brain damage. Oxygen is also needed for cellular respiration, without respiration, there will not be oxygen for carrying out various cellular activities and this will result into death. Oxygen deprivation will also leads to difficulty in breathing and other associated problems.

3 0

2 years ago

a. Order the following liquids in order from least dense to most dense: Dish Soap, Rubbing Alcohol, Milk, Corn Syrup.

Anettt [7]

dish Soap,Corn Syrup,Rubbing Alcohol, Milk,

7 0

1 year ago