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
Mariulka [41]
3 years ago
15

A sample of a compound of xenon and fluorine was confined in a bulb with a pressure of 16 torr. Hydrogen was added to the bulb u

ntil the pressure was 64 torr. Passage of an electric spark through the mixture produced Xe and HF. After the HF was removed by reaction with solid KOH, the final pressure of xenon and unreacted hydrogen in the bulb was 32 torr. What is the empirical formula of the xenon fluoride in the original sample?
Chemistry
1 answer:
avanturin [10]3 years ago
6 0

Answer:

XeF₂

Explanation:

Let's call the compound as XeaFb, where a and b are the number of atoms of each element. In the beginning, the partial pressure of XeaFb was 16 torr. By Dalton's Law, the total pressure of a gas mixture is the sum of the partial pressures of the components, so:

pH₂ = 64 - 16 = 48 torr

The reaction that happened was:

XeaFb + (b/2)H₂ → aXe + bHF

The stoichiometry of the reaction is 1:b/2:a:b. If all the XeaFb reacts:

1 torr of XeaFb -------- b/2 torr of H₂

16 torr -------- x

By a simple direct three rule:

x = 16b/2 = 8b torr of H₂ reacts

1 torr of XeaFb -------- a torr of Xe

16 torr -------- x

x = 16a torr of Xe is formed

Thus, 8b + 16a = 32

b + 2a = 4

The empirical formula is the minimum integer number of the elements in the compound. So, let's suppose a = 1 because fluorine can do only one bond, thus it's unprovable that will be more than one Xe bonded with one F:

b + 2*1 = 4

b = 2

Thus, the empirical formula is XeF₂.

You might be interested in
what the greatest agent of change?water/wind/ice how does this agent continue to weathering lake annette
cluponka [151]

Answer:

Explanation:

water/wind/ice how does this agent continue to weathering lake annette

erosion

The process known as weathering breaks up rocks so that they can be carried away by the process known as erosion. Water, wind, ice, and waves are the agents of erosion that wear away at the surface of the Earth

5 0
2 years ago
The table above lists the wavelength range, frequency range, possible uses, and hazards of the seven types of electromagnetic ra
marusya05 [52]

Answer: A. Gamma Ray

Explanation:

X-ray scans can diagnose possibly life-threatening conditions such as blocked blood vessels, bone cancer, and infections. However, x-rays produce ionizing radiation—a form of radiation that has the potential to harm living tissue. However, the risk of developing cancer from radiation exposure is generally small.

Please mark brainliest if it helped :)

4 0
2 years ago
Question 2 (2 points)
inysia [295]

Answer:

v = 46.5 m/s

Explanation:

Given data:

Mass of car = 1210 kg

Momentum of car = 56250 kg m/s

Velocity of car = ?

Solution:

Formula:

p = mv

p = momentum

m = mass

v = velocity

Now we will put values in formula:

56250 kg m/s  = 1210 kg × v

v = 56250 kg m/s / 1210 kg

v = 46.5 m/s

So a car having mass of 1210 kg with momentum 56250 kg m/s having 46.5 m/s velocity.

5 0
3 years ago
9. During an experiment the students prepared three mixtures A)Starch in water B) Sodium chloride solution C) Tincture of Iodine
il63 [147K]

Answer:

See explanation

Explanation:

Tyndall effect refers to the scattering of light in a solution. Tyndall effect occurs when the size of particles in the solution exceeds 1 nm in diameter. Such solutions are actually called false solutions.

In tincture of iodine, the size of particles in solution is less than 1 nm in diameter hence the solution does not exhibit Tyndall effect. Hence, tincture of iodine is a true solution.

Therefore, if the size of particles in solution exceeded 1nm in diameter, Tyndall effect is observed.

7 0
2 years ago
A chemist wants to observe the following reaction:
stiv31 [10]

It take more energy to break the bonds of the reactants and less energy is given off when the product bonds are formed.

<h3>What is Energy?</h3>

Energy is defined as the ability to do work. Work is done in the breaking or formation of bonds.

The standard Enthalpy (ΔH) of water which was formed in the given reaction is negative.

ΔH= Δproduct - Δreactant

This means that the energy to break the bonds of the reactants is more.

Read more about Enthalpy here brainly.com/question/14291557

3 0
2 years ago
Other questions:
  • List 3 examples of physical change and 3 examples of chemical change.?
    9·1 answer
  • Which type of fatty acid has two or more carbon double bonds?
    5·2 answers
  • On earth, hydrogen and helium are naturally found as gases. Why are they liquid on the outer planets?
    14·1 answer
  • 10 POINTS PLS HELP ASAP WILL MARK BRANLIEST
    9·2 answers
  • Determine if each statement below is True or False regarding Arrhenius and Br∅nsted-Lowry definitions for acids and bases.
    7·1 answer
  • Which is true about models in science?
    15·2 answers
  • A piece of solid tin is submerged in silver nitrate solution a reaction occurs producing tin(IV) nitrate solution and solid silv
    15·1 answer
  • Where do reactions in a solid
    9·1 answer
  • Which phrase is the best definition of matter?
    7·2 answers
  • What is called a measurement and does involve a number and unit in chemistry?​
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!