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
wolverine [178]
4 years ago
9

Consider the reaction: 2clf3(g) + 2nh3(g) → n2(g) + 6hf(g) + cl2(g) when calculating the δh°rxn, why is the δhf° for n2 not impo

rtant?
Chemistry
1 answer:
Leni [432]4 years ago
8 0

<span>Actually, the heat of reaction hrxn s calculated by taking the sum of the heats of formation of the products minus the sum of the heats of formation of the reactants. However, at heat of formations of pure elements at atmospheric conditions is zero, therefore the hf of N2 is not important since it is zero anyway.</span>

You might be interested in
HELP ME<br>dm me on insta<br>temi.awolola<br>I need a lot of help ​
Georgia [21]

Protons:

- Have a mass

- Positively charged

- Found inside the nucleus of an atom

Electrons:

- Have a mass. (9.10938188×10−31 kilograms), though this can sometimes be considered negligible due to how small that actually is. Barely factored into atomic mass

- Negatively charged

- Found outside the nucleus in the electron shell

Neutrons:

- Have a mass

- Neutral (no charge)

- Found inside the nucleus of an atom

Atom A:

- 1 proton

- 0 Neutrons

- 1 electron

- Atomic mass of 1

- Atomic number of 1

Atom B:

- 8 Protons

- 10 Neutrons

- 8 electrons

- Atomic mass of 18

- Atomic number of 8

Atomic mass includes the number of protons and neutrons in the nucleus. Atomic number is the number of protons, as this is what defines what type of element the atom is.

6 0
3 years ago
What type of chemist studies how materials conduct electricity?
e-lub [12.9K]

Explanation:

The study of interaction between the chemical substances is known as chemistry and the person who does this study is called a chemical scientist. Everything around us is made up of matter and the interaction between this matters for one or different substances.

Conduits lead electrical flow in all respects effectively as a result of their free electrons. Separators restrict electrical flow and make poor transmitters. Some basic channels are copper, aluminium, gold, and silver. Some regular encasing are glass, air, plastic, elastic, and wood.

3 0
3 years ago
Read 2 more answers
Why do we feel cold when we touch the iron?
Darya [45]

Heat flows from our body to iron

8 0
2 years ago
Atomic numbers of atoms of elements _____ as you read _____ along each row of the periodic table of the elements.
serious [3.7K]
The periodic table increases as you read left to right so it is A. 
8 0
3 years ago
Read 2 more answers
This is a Science Question:
mr_godi [17]
They are the same as animals ability to find food and get away from others.
8 0
4 years ago
Other questions:
  • If you are given only the mass number of neutrons, how do we find an atomic number?
    12·2 answers
  • What block does sodium belong to? s-block p-block d-block or f-block
    9·2 answers
  • Using 18.8L, calculate the volume (in L) of water vapour that should be produced by the reaction of 35.0 g
    6·1 answer
  • What is the molarity of 0.50 g of Na dissolved in a 1.5 L solution?
    13·2 answers
  • Which formula represents a polar molecule
    11·1 answer
  • The attractive forces between sodium and chloride ions are called:
    14·1 answer
  • Values of R, the ideal gas constant, and the ideal gas equation are given below. Use these to solve the problems.
    5·1 answer
  • 1. How many metals, nonmetals and metalloids are there in the periodic table?
    11·1 answer
  • What does the shape of the moon we see depend on? (2 points)
    7·1 answer
  • Look at the two question marks between zinc (zn) and arsenic (as). at the time, no elements were known with atomic weights betwe
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!