1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
UkoKoshka [18]
3 years ago
12

a sample of h2 gas is collected over water at 23 degrese celsius, if the observed pressure is 750.0 torr, calculate the partial

pressure of h2
Chemistry
1 answer:
Ivahew [28]3 years ago
4 0

Answer:

728.9 torr

Explanation:

Collecting a gas over water results in gathering a mixture of gases. First of all, the target gas is collected, but the gathered sample also contains saturated water vapor.

The saturated water vapor always produces the same pressure which depends on temperature. At a given temperature of 23 degrees Celsius, the saturated vapor pressure is equal to 21.1 torr.

The total pressure is equal to the sum of partial pressures of water and hydrogen:

p = p_{H_2O} + p_{H_2}

Solving for the partial pressure of hydrogen:

p_{H_2} = p - p_{H_2O} = 750.0~torr - 21.1~torr = 728.9~torr

You might be interested in
The _____________ is the temperature at which a substance changes from solid to liquid; ________________ is the temperature at w
Aleksandr-060686 [28]
The _____melting point________ is the temperature at which a substance changes from solid to liquid; _______boiling point_________ is the temperature at which a substance changes from a liquid to as gas; _______vapourisation_________ is the process by which atoms of molecules leave a liquid and become a gas.
5 0
3 years ago
Which of the following is the largest? cg, dg, mg, or ng
katrin [286]
The correct answer is:  [C]:  " mg " {"milligrams"} .
_____________________________________________________
4 0
3 years ago
Read 2 more answers
I've been waiting for like 10 mins. Please answer this.
Degger [83]

The answer is B. 6CO2+H2O yields C6H12O6+ 6H20.

3 0
3 years ago
Read 2 more answers
A penny has a mass of 2.50g and the Moon has a mass of ×7.351022kg, How many moles of pennies have a mass equal to the mass of t
baherus [9]
Answer: 122 moles

Procedure:

1) Convert all the units to the same unit

2) mass of a penny = 2.50 g

3) mass of the Moon = 7.35 * 10^22 kg (I had to arrage your numbers because it was wrong).

=> 7.35 * 10^22 kg * 1000 g / kg = 7.35 * 10^ 25 g.

4) find how many times the mass of a penny is contained in the mass of the Moon.

You have to divide the mass of the Moon by the mass of a penny

7.35 * 10^ 25 g / 2.50 g = 2.94 * 10^25 pennies

That means that 2.94 * 10^ 25 pennies have the mass of the Moon, which you can check by mulitiplying the mass of one penny times the number ob pennies: 2.50 g * 2.94 * 10^25 = 7.35 * 10^25.

5) Convert the number of pennies into mole unit. That is using Avogadros's number: 6.022 * 10^ 23

7.35 * 10^ 25 penny * 1 mol / (6.022 * 10^ 23 penny) = 1.22* 10^ 2 mole = 122 mol.

Answer: 122 mol
8 0
3 years ago
Trey was asked to build a working model of a landform for a science project. He chose to build a model of a volcano.
maksim [4K]
Can you please give me more details so I can help you
3 0
3 years ago
Read 2 more answers
Other questions:
  • The buildings in this old mine are made of metal. You can see over 100 years, the silver color of the buildings has changed. The
    15·2 answers
  • What is gluecose used for
    12·1 answer
  • Place the following substances in order of pH from lowest pH to highest.
    5·2 answers
  • Choose all that apply. Which of the following are included in the physical sciences? biology sociology physics geology
    8·2 answers
  • Please answer number 76,77 and 78.
    15·1 answer
  • Which options identify what the arrows in the diagram
    15·1 answer
  • How much heat is absorbed/released when 20.00 g of NH3(g) (17.0307g/mol) react in the presence of excess O2(g) to produce NO(g)
    14·1 answer
  • 3. In which states of matter can materials take the shape of their containers?
    13·2 answers
  • What will happen to the salt when mixed to liquid?​
    14·2 answers
  • The mayor refused to _______ as to his margin of victory in the election.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!