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
Genrish500 [490]
1 year ago
13

A 5. 0 l flask containing o2 at 2. 00 atm is connected to a 3. 0 l flask containing h2 at 4. 00 atm and the gases are allowed to

mix. What is the mole fraction of h2? report your answer to two decimal places.
Chemistry
1 answer:
dsp731 year ago
3 0

The mole fraction of hydrogen is 0.55.

The volume of oxygen = 5 litres

The pressure of oxygen = 2 atm

The volume of hydrogen = 3 litres

The pressure of hydrogen = 4 atm

The universal gas constant is R.

R = 8.31 J mol—¹ K—¹

The ideal gas equation is,

PV = nR T

The number of moles of oxygen is,

PV = nRT

n =  \frac{ PV }{RT }

n =  \frac{2 \times 5}{8.31 \times 273}

n = 0.004 moles

The number of moles of oxygen is 0.004 moles.

The number of moles of hydrogen is,

PV = nRT

n =  \frac{ PV }{RT }

n =  \frac{4 \times 3}{8.31 \times 273}

n = 0.005 moles

The number of moles of hydrogen is 0.005 moles.

The mole fraction of hydrogen is,

Mole \:  fraction =  \frac{ Moles \:  of \:  solute }{Total \:  number  \: of  \:  moles  \: of  \: solute \:  and \:  solvent}

Mole \:  fraction  =  \frac{0.005}{0.009}

= 0.55

Therefore, the mole fraction of hydrogen is 0.55.

To know more about mole fraction, refer to the below link:

brainly.com/question/28344281

#SPJ4

You might be interested in
Is the reaction mg²⁺(aq) + h₂o(l) → mgo(s) + 2h⁺(aq) endothermic or exothermic?
aliya0001 [1]
<span>If energy is released, the reaction is exothermic. If energy is absorbed, the reaction is endothermic. Since heat is being absorbed in this reaction (to break down H2O into H2 and O), the reaction is endothermic.</span>
3 0
3 years ago
What do you think happens to the bonds between atoms when substances melt?
Eduardwww [97]

Answer:

As a substance melts, and goes from a solid to a liquid state, the kinetic energy of the molecules increases, and the molecules move faster, and they separate further and further away from each other.  The intermolecluar forces holding the molecules together become weaker.  This is why a liquid can take fill the shape of its container, whereas a solid has a fixed shape.

Explanation:

take your notes man

6 0
3 years ago
if the climate warmed which of the following would be caused by rising temperatures? .a. an increase in sea levels. b. an increa
Klio2033 [76]

A warming climate can cause seawater to expand and ice over land to melt, both of which can cause a rise in sea level. Storm surge on a Louisiana highway shows the effects of rising sea levels. Many people are interested in climate change and how a changing climate will affect the ocean.

5 0
3 years ago
A 52.0 g of Copper (specific heat=0.0923cal/gC) at 25.0C is warmed by the addition of 299 calories of energy. find the final tem
Leto [7]

Answer : The final temperature of the copper is, 87.29^oC

Solution :

Formula used :

Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})

where,

Q = heat gained  = 299 cal

m = mass of copper = 52 g

c = specific heat of copper = 0.0923cal/g^oC      

\Delta T=\text{Change in temperature} 

T_{final} = final temperature = ?

T_{initial} = initial temperature = 25^oC

Now put all the given values in the above formula, we get the final temperature of copper.

299cal=52g\times 0.0923cal/g^oC\times (T_{final}-25^oC)

T_{final}=87.29^oC

Therefore, the final temperature of the copper is, 87.29^oC

4 0
3 years ago
Ill give u brainliest help asap
Anna007 [38]

I think its A. it cant be C or D b/c we are measuring the distance between Earth and Saturn, not the speed.

7 0
3 years ago
Other questions:
  • Water (H2O) forms when hydrogen gas (H2) and oxygen gas (O2) react according to the equation below: 2H2 +O2 → 2H2O What mass of
    14·2 answers
  • The degree to which a measurement approaches a standard value is _____. accuracy
    14·2 answers
  • The rate law for the reaction
    12·1 answer
  • There was an airplane crash, every single person on board died, but yet two people survived. How is this possible?
    14·1 answer
  • Global warming facts
    10·1 answer
  • A chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical
    13·1 answer
  • A 3.2-gram sample of air contains 0.000 74 gram of hydrogen cyanide. Determine the concentration, in parts per million, of the h
    5·1 answer
  • Why is the reaction of a strong acid and a strong base classified as a neutralization reaction?
    13·1 answer
  • Number of representative particles in 3 moles Sn
    13·1 answer
  • Tris has a molecular weight of 121 g/mol. How many grams of Tris would you need to make 100 mL of a 100 mM solution of Tris
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!