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
PSYCHO15rus [73]
2 years ago
12

A gas mixture at room temperature contains 10.0 mol CO and 12.5 mol O2. (a) Compute the mole fraction of CO in the mixture. (b)

The mixture is then heated, and the CO starts to react with the O2 to give CO2: CO(g) " 1 2 O2(g) 8n CO2(g)
Chemistry
1 answer:
zlopas [31]2 years ago
7 0

Answer:

a. the mole fraction of CO in the mixture of CO and O2.

mole fraction = moles of CO/ Total moles of the mixture

Mole fraction of CO = 10/(10+12.5)=0.444

b. Reaction - CO(g)+½O2(g)→CO2(g)

Stoichiometry: 1 mole of CO react with 0.5mole of O2 to give 1 mole of CO2

So given,

At a certain point in the heating, 3.0 mol CO2 is present. Determine the mole fraction of CO in the new mixture.

3mol of CO2 is produced from 3 mols of CO and 1.5mol of O2

This means that unused mols are : 7mols of CO and 11mols of O2

Total product mixture = 3 + 7 + 11 = 21mols

mole fraction of CO = 7/21 = 0.33

You might be interested in
3. What is the energy of a photon whose frequency is 5.2 x 1015 Hz? Use the equation: E = hxv
anzhelika [568]

Answer:

3. 3.45×10¯¹⁸ J.

4. 1.25×10¹⁵ Hz.

Explanation:

3. Determination of the energy of the photon.

Frequency (v) = 5.2×10¹⁵ Hz

Planck's constant (h) = 6.626×10¯³⁴ Js

Energy (E) =?

The energy of the photon can be obtained by using the following formula:

E = hv

E = 6.626×10¯³⁴ × 5.2×10¹⁵

E = 3.45×10¯¹⁸ J

Thus, the energy of the photon is 3.45×10¯¹⁸ J

4. Determination of the frequency of the radiation.

Wavelength (λ) = 2.4×10¯⁵ cm

Velocity (c) = 3×10⁸ m/s

Frequency (v) =?

Next, we shall convert 2.4×10¯⁵ cm to metre (m). This can be obtained as follow:

100 cm = 1 m

Therefore,

2.4×10¯⁵ cm = 2.4×10¯⁵ cm × 1 m /100 cm

2.4×10¯⁵ cm = 2.4×10¯⁷ m

Thus, 2.4×10¯⁵ cm is equivalent to 2.4×10¯⁷ m

Finally, we shall determine the frequency of the radiation by using the following formula as illustrated below:

Wavelength (λ) = 2.4×10¯⁷ m

Velocity (c) = 3×10⁸ m/s

Frequency (v) =?

v = c / λ

v = 3×10⁸ / 2.4×10¯⁷

v = 1.25×10¹⁵ Hz

Thus, the frequency of the radiation is 1.25×10¹⁵ Hz.

8 0
2 years ago
I DARE YALL TO JOIN THIS MEET CODE IS cdabauer JOIN THEN HURRY UP AND LEAVE AND YOU WILL GET BRAINLY​
Aleonysh [2.5K]

Answer:

nah but ill take points tho

Explanation:

4 0
2 years ago
Read 2 more answers
What is the mass in grams of 120 liters at STP oh He gas​
skad [1K]

The mass of He gas = 21.428 g

<h3>Further explanation</h3>

Given

120 liters of He gas​

Required

the mass in grams

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, Vm is 22.4 liters/mol.

Mol for 120 L :

\tt \dfrac{120}{22.4}=5.357~moles

Mass of He gas(MW=4 g/mol) :

\tt mass=mol\times Ar\\\\mass=5.357\times 4=21.428~g

5 0
2 years ago
At the beach, a student fills two beach pails, one with sand and one with seawater. She places both pails in the same spot in th
Gnesinka [82]

Answer:

Which word in the following sentence is a linking verb?

The gym became noisy when fans stamped and cheered for the home team.

A. became

B. noisy

C. stamped

D. cheered

Which word in the following sentence is a linking verb?

The gym became noisy when fans stamped and cheered for the home team.

A. became

B. noisy

C. stamped

D. cheered

Explanation:

Which word in the following sentence is a linking verb?

The gym became noisy when fans stamped and cheered for the home team.

A. became

B. noisy

C. stamped

D. cheered

7 0
2 years ago
Read 2 more answers
A cubic container is filled up with an unknown liquid whose density is 0.180 g/cm3. The side lengh of the container is 5.00cm. W
Oksi-84 [34.3K]

Answer:

THE MASS OF THE LIQUID IS 22.5 g

Explanation:

Density = 0.180 g/cm3

Side length = 5 cm

Mass = unknown

To calculate the mass of the liquid, we use the formula:

Mass = density * volume

Volume of a cube or cuboid container = l^3

Volume = 5 ^3 = 125 cm3

So therefore, the mass of the liquid is:

Mass = 0.180 * 125

Mass = 22.5 g

In conclusion, the mass of the liquid in the container is 22.5 g

4 0
3 years ago
Other questions:
  • Consider the following balanced equation: SiO2(s)+3C(s)→SiC(s)+2CO(g) Complete the following table showing the appropriate numbe
    8·2 answers
  • How does the sun's position in the sky affect rainbows?
    10·1 answer
  • Which of the following influence the pressure of gases? (select ALL that apply)
    5·1 answer
  • How is aluminum used in a lithium ion type of battery?
    14·1 answer
  • A flexible container at an initial volume of 6.13 L contains 8.51 mol of gas. More gas is then added to the container until it r
    8·1 answer
  • When an element'’s mass in grams equals the element’'s atomic mass, how many moles of atoms are contained in that amount of the
    5·1 answer
  • Write E in the blank if the material is heterogeneous or O if it is homogeneous.
    10·1 answer
  • The table shows the average distance between the molecules of a substance in the solid, liquid, and gaseous states.
    10·1 answer
  • Help pls I will give brainliest!
    8·1 answer
  • select which of the following correctly represents the BALANCED chemical reaction for the production of HCL gas from its element
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!