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
almond37 [142]
3 years ago
5

Consider the following intermediate chemical equations.

Chemistry
1 answer:
vfiekz [6]3 years ago
8 0

Answer:

-250.3kJ

Explanation:

Based in the reactions and using -<em>Hess's law-</em>:

(1) P₄(s) + 6 Cl₂(g) → 4PCl₃(g) ΔH₁ = -4439kJ

(2) 4PCl₅(g) → P₄(s) + 10Cl₂  ΔH₂ = 3438kJ

The sum of (1) + (2) is:

4PCl₅(g) → 4PCl₃(g) + 4 Cl₂ ΔH = -4439kJ + 3438kJ = -1001kJ

Dividing this reaction in 4:

PCl₅(g) → PCl₃(g) + Cl₂ ΔH = -1001kJ / 4 = <em>-250.3kJ</em>

You might be interested in
The ____ contains the highest concentration of ozone.
ad-work [718]
<span>C. The stratosphere. About 90% of the ozone is in the stratosphere which begins about 8 miles above the Earth's surface.</span>
3 0
3 years ago
Read 2 more answers
The mass of .10 moles of iron is:
Stels [109]

Answer:

<em>so mass in gram=560grams</em>

Explanation:

number of moles=10moles

molar mass=56grams/moles

mass in gram of Fe=?

as we know that

number of moles=\frac{mass in gram}{molar mass}

<em>evaluating the formula</em>

<em>number of moles×molar mass=mass in gram</em>

<em>mass in gram=10moles×56grams/moles</em>

<em>mass in gram=560grams</em>

<em>i hope this will help you :)</em>

8 0
3 years ago
Read 2 more answers
The purpose of a scientific investigation is
torisob [31]
Is to find the problem to the investigation
5 0
3 years ago
Choose the atom with:
nata0808 [166]

Answer:

a )Li

b)O

c)F

Explanation:

a) Li-1s^2 2s^1

F-1s^2 2s^2 2p^5

it is easy to pull out e- from 2p orbit than 2s because 2s orbit is close to nucleus.Therefore Li have high ionisation enthalpy

b)oxygen ion is larger than Na because o have fewer proton

c)F because it requires only 1e to achieve stable noble gas configuration.Therefore to achieve stable nobke gas electonic configuration it accept 1e.

6 0
3 years ago
Pls help this is science pls help
Sloan [31]
The top left image is a delta, which is caused by deposition.
The top middle image is a lake, which is caused by erosion.
The bottom left is a mountain, which is caused by plate tectonics.
The bottom middle is a volcano, which is caused by uplift.
4 0
3 years ago
Other questions:
  • Farmer brown is planting crops in his feild s. He wants to prevent the topsoil from being blown away by the wind or washed away
    12·2 answers
  • As a liquid is added to a beaker, the pressure exerted by the liquid on the bottom of the beaker does what
    8·1 answer
  • What is an example of a physical change
    10·2 answers
  • Identify the element: 6 energy level, metallic, 82 election
    11·1 answer
  • 234+34.1 add and round to 2 significant figures
    7·1 answer
  • Calculate the change in ph if 0.070 g of solid naoh is added to 100 ml of the solution in the problem above.
    5·1 answer
  • Which one of the following is different from the others A .HCl B. HF C. HBr D. HI​
    7·1 answer
  • Which image represents ether? Check all that apply.
    9·1 answer
  • You have 1 1/2 moles of 1 kg bottles of O2. What is the mass of O2 that you have? A. 9.033x10^23 kg B. 9.033x10^23 atoms C. 1.80
    10·2 answers
  • Can someone Help pls :)
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!