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
Aliun [14]
3 years ago
7

Consider the chemical equations shown here. 2 equations. 1: 2 upper H subscript 2 (g) plus upper O subscript 2 (g) right arrow 2

upper H subscript 2 upper O (g). Delta H 1 equals negative 483.6 kilojoules divided by 2 equals negative 241.8 kilojoules per mole. 2: 3 upper O subscript 2 (g) right arrow 2 upper O subscript 3 (g). Delta H 2 equals 284.6 kilojoules divided by 2 equals 142.3 kilojoules per mole. What is the overall enthalpy of reaction for the equation shown below? 3 upper H subscript 2 (g) plus upper O subscript 3 (g) right arrow 3 upper H subscript 2 upper O (g).
Chemistry
1 answer:
vova2212 [387]3 years ago
7 0
-867.7 kJ just did it
You might be interested in
Question 1 of 15<br> 2 Points<br> What is another name for a pure substance?<br> Answer here
maksim [4K]

Answer:

element

Explanation:

elements consist of pure substances

4 0
3 years ago
Which of the following elements is the smallest?
Oliga [24]

Answer:

Explanation:

The atomic radius of elements are used to estimate the sizes of elements. The atomic radius is taken as half of the inter-nuclear distance between two covalently bonded atoms of non-metallic elements or half of the distance between two nuclei in the solid state of metals.

To solve this problem we will obtain the atomic radius values of the given elements from a standard atomic radius table;

          Si          111 pm

           P          98 pm

          Cl          79 pm

            S           87pm

pm = picometer

We see that chlorine has the least atomic radius

7 0
3 years ago
Read 2 more answers
Relative to electrons and electron states, what does each of the four quantum numbers specify
Alla [95]

Answer:

(n, l, m sub l, m sub s)

N: principle quantum number (1,2,3,4,etc)

l: angular momentum quantum number, the shape (l has to be at least 1 less than n, but can be 0 depending on n)

M sub l: magnetic quantum number (l determines this number)

M sub s: spin quantum number (can only ever be 1/2 or -1/2)

Explanation:

8 0
3 years ago
The reaction between sulfur dioxide and oxygen is reversible.
RUDIKE [14]

Explanation:

the correct answer is

D) 0.636 mol/dm³

3 0
3 years ago
Which particles make up the nucleus of an atom?
Anuta_ua [19.1K]
Protons and neutrons
electrons just revolve around it
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following changes would increase the rate of a reaction between vinegar and sodium hydroxide? (2 points) Question 2
    9·2 answers
  • What is the electron geometry if you have 4 electron groups around the center atom? What is the electron geometry if you have 4
    14·1 answer
  • An object's _______ depends on gravity, but an object's _______ does not. A. volume; density B. mass; weight C. weight; mass D.
    7·2 answers
  • Compare the orbital notations of the substances investigated in this experiment with their attraction to the magnet. What unique
    9·1 answer
  • Which actions will change an object’s weight, but not it’s mass?
    7·1 answer
  • An animal can ____.
    7·1 answer
  • The galaxies pictured above would best be classified as
    10·1 answer
  • Please help me, I am confused
    15·1 answer
  • Is the flow of energy during vaporizing more like the flow of energy during melting or during freezing?
    7·1 answer
  • Explain how to calculate the number of grams in 5.50 x 1022 atoms.
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!