CHEMISTRY HIGH SCHOOL

The respiratory system takes oxygen into the human body and expels carbon dioxide. Which body system interacts with the respiratory system to transport these gases to and from the various parts of the body?A. the nervous system
B. the digestive system
C. the urinary system
D. the circulatory system

Answers

Answer 1
Answer: The answer is D, the circulatory system. 
Answer 2
Answer:

Answer:

The answer is D, the circulatory system.

Explanation:

I got a a on the test

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If a sample of a gas at 25.2oC has a volume of 536 mL at 0.838 atm, what will its volume be if the pressure is increased to 0.937 atm? A) 477.78 mL B) 563.21 mL C) 503.88 mL D) 613.52 mL
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A thermometer is in a beaker of water. Which statement best explains why the thermometer reading initially increases when LiBr(s) is dissolved in the water?(1) The entropy of the LiBr(aq) is greater than the entropy of the water.(2) The entropy of the LiBr(aq) is less than the entropy of the water.(3) The dissolving of the LiBr(s) in water is an endothermic process.(4) The dissolving of the LiBr(s) in water is an exothermic process.
a teacher describes a mathematical system that can be used to convert the weight of water to the mass of water

Creates clouds, snow, sleet, rain and hail

Answers

Water!!! (H2O) ........... :)

Most metals are in the liquid state at room temperature.

Answers

that statement is False.

Most metals are in the solid state at room temperature. The only metal that is in liquid state in the room temperature is Mercury, (Hg)

The molar heat of vaporization of water is 40.7kj/mol. How much heat must be absorbed to convert 50.0 grams of liquid water at 100°C to steam at 100°C?

Answers

You have to use the formula q=nΔH(vap)
q=the heat absorbed or released
n=the number of moles of the sample (in this case 2.78mol (50g/18g/mol))
ΔH(vap)=the heat of vaporization for the sample (in this case 40.7kJ/mol)

When you plug everything in you should find that 113.05kJ is needed to vaporize 50g of water.  (the temperature does not change during a phase change since all of the heat absorbed is being used to break the intermolecular forces and none of it is being used to speed up the molecules). 

I hope this helps.  Let me know if anything is unclear.

Water (H2O) is considered a mineral because it is inorganic and occurs naturally.a. True
b. False

Answers

b.false because water is not mineral

Ozone is dangerous to human health only when it is found in the what?

Answers

Only when it is found in the atmosphere, because it will create a hole, letting strong UV rays shine down on earth, heating it up, and causing skin cancer in humans and other animals.

Answer:

A) Stratosphere

B) trosphere

C)mesosphere

D)thermosphere

Explanation:

D) thermosphere

The element carbon is found on the right side of the periodic table and is known as a _________, which means that it is normally a poor conductor of heat and electricity and is dull and brittle.

Answers

Answer:

Non metal.

Explanation:

The periodic table is arrangements of the elements into a particular order based on their atomic number .

In general when we move from left to right in a periodic table the metallic properties of the elements decreases. So we can say that the left most elements are metals and the right most elements are non metals.

Now as carbon is placed on the right side of the periodic table as it is considered to be non metal.

NON-METAL.....................
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