English

Find the Mass of 2 Moles of Nitrogen Atoms. - Science

Advertisements
Advertisements

Question

Find the mass of 2 moles of nitrogen atoms.

Short Note

Solution

Given moles on N atom = 2 moles

Gram atomic mass of nitrogen atoms = 14g

Therefore, 14g of nitrogen atoms = 1 mole of nitrogen atoms

So, 2 moles of nitrogen atoms = 14 × 2g of nitrogen atoms

Hence, 2 moles of nitrogen atoms weigh 28g.

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Atoms and Molecules - Very Short Answers [Page 172]

APPEARS IN

Lakhmir Singh Chemistry [English] Class 9
Chapter 3 Atoms and Molecules
Very Short Answers | Q 10 | Page 172

RELATED QUESTIONS

The average atomic mass of a sample of an element X is 16.2 u. What are the percentages of isotopes `""_8^16X" and """_8^18X` in the sample?


Tick the most appropriate answer.

Who discovered that radioactive rays are given out by uranium?

  1. Henri Becquerel
  2. Marie Curie
  3. Pierre Curie
  4. Schmidt

Write the names of `("NH"_4)_2"SO"_4` compounds:


Define: Chemical bond


Name three non-metals/radicals which have valency -1, -2, and -3.


Define: Covalent bond


Write electronic configuration of oxygen, fluorine, sodium, silicon, argon.


State Dalton’s atomic theory.


Name the particle or particles you would expect to find in :

The orbit of an atom


Name the particle or particles you would expect to find in :

The nucleus of an atom


An atom of an element X may be written as `""_9^4"X"`
(a) What does the figure 9 indicate?
(b) What does the figure 4 indicate?
(c) What is the number of protons in atom X?
(d) What is the number of neutrons in atom X?
(e) What is the number of electrons in atom X?
(f) How many electrons are there in the outermost shell of an atom of element X?
(g) Write the symbol of ion formed by an atom of element X.


Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.


Electron, proton, neutron are the types of ______ in an atom.


What is the contribution of the following in atomic structure?
Maharshi Kanada


Draw the electron dot structure of this compound. 


Name the gas that.

Turns moist starch iodide paper blue black.


The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of aluminium


Assertion: An atom is electrically neutral.

Reason: Atoms have equal number of protons and electrons.


Define the following term with an example.

Non-metal


______ is a substance that is made up of three oxygen atoms chemically combined.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×