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
kolbaska11 [484]
3 years ago
8

If the vapor pressure of water (

align="absmiddle" class="latex-formula">) at 20.0°C is 17.5 mm Hg, and the atmospheric pressure measured by a barometer (P_{total}) was 757.3 mm Hg, what is the partial pressure of H₂ gas (P_{H_2}) in the gas mixture in a buret? (Use Dalton’s Law of Partial Pressures to solve for P_{H_2})
Chemistry
1 answer:
dmitriy555 [2]3 years ago
3 0

Answer:

739.8 mmHg

Explanation:

By Dalton's Law of Partial Pressures, the total pressure of a gas mixture is the sum of the partial pressure of its components. The partial pressure is the pressure that the substance would have if it was alone in the same conditions of the mixture (same temperature and volume). So:

P_{total} = P_{H_{2}O} + P_{H_{2}}

757.3 = 17.5 + P_{H_{2}}

P_{H_{2}} = 757.3 - 17.5

P_{H_{2}} = 739.8 mmHg

You might be interested in
You are deciding whether to buy a product from a company. Which is the best
kolezko [41]

Answer:

A) a government's website

5 0
3 years ago
What effect does atmospheric pressure and altitude have on the boiling point of water?
NeTakaya
The temperature change.
5 0
3 years ago
Assuming 80 mg of vitamin c present 29.57 ml if oj how many milliliters of 0
BigorU [14]
I think you add 29.57 + 80 and the answer would be 30.37
5 0
3 years ago
The pOH of a solution of KOH is 11.30. What is the [H*] for this solution?​
Sloan [31]

Answer: The concentration of hydrogen ions for this solution is 1.99 \times 10^{-3}.

Explanation:

Given: pOH = 11.30

The relation between pH and pOH is as follows.

pH + pOH = 14

pH + 11.30 = 14

pH = 14 - 11.30

= 2.7

Also, pH is the negative logarithm of concentration of hydrogen ions.

pH = - log [H^{+}]

Substitute the values into above formula as follows.

pH = -log [H^{+}]\\2.7 = -log [H^{+}]\\conc. of H^{+} = 1.99 \times 10^{-3}

Thus, we can conclude that the concentration of hydrogen ions for this solution is 1.99 \times 10^{-3}.

4 0
3 years ago
B. It shifts the equilibrium toward the right, favoring product.
PilotLPTM [1.2K]

Answer:

11) the difference in heat energies between products and reactants

12) enthalpy change

Explanation:

The heat of reaction is defined as that energy released or absorbed as chemical substances participate in a chemical reaction. It is a term used to denote the change in energy as reactants change into products.

Another name of heat of reaction is enthalpy of reaction. It is a state function since it depends on the initial and final states of the system.

8 0
3 years ago
Other questions:
  • 1. Concentrated HCl is 11.7M. What is the
    7·1 answer
  • An electric field is created by particles that
    5·1 answer
  • Why did biologist in the 1960s recommend reintroducing wolves to yellow stone
    11·1 answer
  • Please help me i dont understand this!
    11·1 answer
  • An unknown monatomic gas diffuses twice as fast as Br2. What is the identity of this unknown gas?
    14·1 answer
  • What is the product of ( 2.324 cm x 1.11 cm) expressed to the correct number of significant figures?
    10·1 answer
  • Which energy transformation is represented in the diagram?
    14·2 answers
  • An artificial vesicle containing a 1 M glucose solution is composed of a phospholipid bilayer lacking any protein components oth
    15·2 answers
  • An element in Group 16 on the Periodic Table would most likely bond with which of the following
    6·1 answer
  • How many significant figures<br> are in this number?<br> 43.55
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!