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What should be the mole fraction of O2 in the gas mixture the diver breathes in order to have the same partial pressure of oxyge

Nutka1998 [239]

The question is incomplete, here is the complete question:

A scuba diver is at a depth of 355 m, where the pressure is 36.5 atm.

What should be the mole fraction of $O_2$ in the gas mixture the diver breathes in order to have the same partial pressure of oxygen in his lungs as he would at sea level? Note that the mole fraction of oxygen at sea level is 0.209.

Answer: The mole fraction of oxygen in the gas mixture is 0.00573

Explanation:

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

$p_{A}=p_T\times \chi_{A}$ ........(1)

where,

$p_A$ = partial pressure of oxygen at sea level = ?

$p_T$ = total pressure at sea level = 1.00 atm

$\chi_A$ = mole fraction of oxygen at sea level = 0.209

Putting values in equation 1, we get:

$p_{O_2}=1.00atm\times 0.209\\\\p_{O_2}=0.209atm$

As, partial pressure of the oxygen in the diver's lungs is equal to the partial pressure of oxygen at sea level

We are given:

$p_T=36.5atm\\p_{O_2}=0.209atm$

Putting values in equation 1, we get:

$0.209atm=36.5atm\times \chi_{O_2}\\\\\chi_{O_2}=\frac{0.209}{36.5}=0.00573$

Hence, the mole fraction of oxygen in the gas mixture is 0.00573

3 0

3 years ago

What is another word for the sound barrier?

8090 [49]

Answer:

The Answer is B. Destructive Interference

Explanation:

3 0

3 years ago

Read 2 more answers

Dimensional analysis: if you count at the rate of 2 numbers every secound, how many days whould it take you to count to 1 millio

son4ous [18]

Answer: 5 days

Explanation:

1,000,000/2 = 500,000 *do this because of the 2 numbers every second

500,000/60= 8,333.33 *do this to get minutes

8,333.33/60= 138.88 *do this to get hours

138.88/24= 5.7866 *do this to get days

5 days 7 hours 8 minutes 6 seconds

4 0

3 years ago

Solid iron sulfide combines with aqueous hydrogen chloride to form hydrogen sulfide gas and aqueous iron chloride.

KIM [24]

Answer:

Fe2S3 + 6HCl → 3H2S + 2FeCl3 is a double-displacement reaction

Explanation:

Step 1: The balanced equation

Fe2S3 + 6HCl → 3H2S + 2FeCl3

Step 2:

Decomposition: This is a reaction in which a compound breaks down into two or more simpler substances. Most decomposition reactions require an input of energy in the form of heat, light, or electricity.

The general form of a decomposition reaction is: AB→A+B

In our case, this is not a decomposition reaction.

Synthesis: This is a type of chemical reaction in which two or more simple substances combine to form a more complex product. The reactants may be elements or compounds, while the product is always a compound.

The general form of a decomposition reaction is: A + B → AB

In our case, this is not a synthesis reaction.

Single-displacement reaction: This is a reaction in which one element replaces a similar element in a compound. The general form of a single-replacement (also called single-displacement) reaction is:

A+BC→AC+B

In our case, this is not a single-displacement reaction.

Double - displacement reaction: This is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds. The general form of a double-replacement (also called double-displacement) reaction is:

AB+CD→AD+B

In this reaction, A and C are positively-charged cations, while B and D are negatively-charged anions. Double-replacement reactions generally occur between substances in aqueous solution. In order for a reaction to occur, one of the products is usually a solid precipitate, a gas, or a molecular compound such as water.

In our case: There occurs a duble replacement between Fe^3+ and S^2- with H+ and Cl-.

Fe2S3 + 6HCl → 3H2S + 2FeCl3 is a double-displacement reaction

8 0

3 years ago

What's the difference between long period and short period comets?

just olya [345]

Answer:

100 years

Explanation:

just took the quiz :)

6 0

4 years ago