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
andriy [413]
3 years ago
9

Consider the following reaction to generate hydrogen gas: Zn(s) + 2 HCl(aq) → ZnCl2(aq) + H2(g) The hydrogen gas is collected by

displacement of water at 35.0 °C at a total pressure of 745 torr. The vapor pressure of water at 35.0 °C is 42 torr. Calculate the partial pressure of H2 (in atm) if 353.2 mL of gas is collected over water from this method.
Chemistry
1 answer:
Helen [10]3 years ago
4 0

Answer:

0.925 atm

Explanation:

By Dalton's Law, the total pressure of a gas mixture is the sum of the partial pressure of its components. The vapor pressure of the water is the pressure that some molecules that evaporated do under the liquid surface. The gas and the liquid are at equilibrium. So, the gas mixture is water vapor and hydrogen gas.

Ptotal = Pwater + PH₂

745 = 42 + PH₂

PH₂ = 703 torr

Transforming to atm:

1 atm ------------------760 torr

x ------------------ 703 torr

By a simple direct three rule

760x = 703

x = 0.925 atm

You might be interested in
A science fair volcano bubbles and fizzes. what is taking place?
vaieri [72.5K]
Answer is B. gas formation
7 0
3 years ago
Name 5 metals used to make the penny over the years.
Irina18 [472]
These 5 metals are: zinc,copper,tin,bronze,nickel
6 0
3 years ago
By how much will the water temperature increases if 1046 J of heat energy are added. The specific heat of water is 4.184 J/g • °
Brilliant_brown [7]

Answer:

Option A

250 degrees Celcius

Explanation:

If 1046J of heat energy is added to water, the water will experience a rise in temperature, at a rate that is directly proportional to its specific heat capacity.

Mathematically, this can be seen as Q=C\Delta T

Where C = specific heat of water = 4.184 J/g • °C.

Q = heat energy = 1046 J

\Delta T =1046/4.148=250 degrees Celcius

Therefore, the increase in temperature that will be experienced, is for 250 degrees Celcius

8 0
2 years ago
How does atomic radius (size or atom diameter) affect bond distance (distance between atoms)?
yKpoI14uk [10]
When two atoms of the same element are covalently bonded, the radius of each atom will be half the distance between the two nuclei because they equally attract the electrons. The reason for this trend is that the bigger the radii, the further the distance between the two nuclei. Hope this helps:)
4 0
3 years ago
Read 2 more answers
1S Called A simple machine that has a disc with a grooved rim to wind up asing is called When a fixed pulley and a movable nugnk
maxonik [38]

what is the question??

3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the pH of a solution formed at the neutralization point by the reaction of 25.0 mL of 0.180 molar acetic acid (Ka = 1.8
    6·1 answer
  • Camphor, a saturated monoketone from the Asian camphor tree, is used among other things as a moth repellent and as a constituent
    9·1 answer
  • Which sentence about the periodic table of elements is true? *
    13·1 answer
  • Compound Y has the elements C, H, N and O. It's exact mass is 91.0425. Answer the following questions. Isotope Exact Mass 1H 1.0
    11·1 answer
  • In an experiment, onion plants of different ages were exposed to various amounts of caffeine to determine the effect of caffeine
    7·1 answer
  • Predidt the direction and the relative value of the dipole moment of the following bond: C-Cl
    14·1 answer
  • What are some reasons the human population increased greatly in the past<br> couple hundred years?
    12·1 answer
  • Which is an example of a constructive force?
    9·2 answers
  • What does the term solar power mean?
    14·1 answer
  • 1.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!