(a) How many atoms are there in exactly 12 g of carbon -12 element? (C = 12 u)(b) What name is given to this number?(c) What name is given to the amount of substance containing this number of atoms?
(a) 6.022 × 1023 atoms are present in 12g of carbon-12 element.
(b) The name given to this number is Avogadro’s number.
(c) A substance containing 6.022 × 1023 number of atoms is called 1 mole of that substance.
Related Articles
- What name is given to the amount of substance containing 6.022 × 1023 particles(atoms, molecules or ions) of a substance?
- How many grams of magnesium will have the same number of atoms as 6 grams of carbon? (Mg = 24 u ; C = 12 u)
- If 12 gram of carbon has x atoms, then the number of atoms in 12 grams of magnesium will be :(a) x (b) 2x (c) x/2 (d) 1.5x
- What are nucleons? What is the name given to those atoms which have same number of nucleons in it?
- How many moles of calcium carbonate (CaCO3) are present in 10 g of the substance? (Ca = 40 u ; C = 12 u ; O = 16 u)
- A student wants to have 3.011 × 1023 atoms each of magnesium and carbon elements. For this purpose, he will have to weigh :(a) 24 g of magnesium and 6 g of carbon(b) 12 g of carbon and 24 g of magnesium(c) 20 g of magnesium and 10 g of carbon(d) 12 g of magnesium and 6 g of carbon
- If one mole of carbon atoms weighs 12 grams, what is the mass (in grams) of 1 atom of carbon?
- What name is given to those atoms which contain the same number of protons and electrons but different number of neutrons?
- Fill in the following blanks :(a) 1 mole contains ...................... atoms, molecules or ions of a substance.(b) A mole represents an ..................... number of particles of a substance.(c) 60 g of carbon element are ................... moles of carbon atoms.(d) 0.5 mole of calcium element has a mass of ......................(e) 64 g of oxygen gas contains ....................... moles of oxygen atoms.
- What name is given to the pair of atoms such as 147N and 157N?
- How many moles are represented by 100 g of glucose, C6H12O6 ?(C = 12 u, H = 1 u, O = 16 u)
- An atom has atomic number 12, what is its valency, and name the element?
- (a) What are valence electrons? Where are valence electrons situated in an atom?(b) What is the number of valence electrons in the atoms of an element having atomic number 13? Name the valence shell of this atom.
- What name is given to the number of 6.022 × 1023?
- Buckminsterfullerene is a spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.(a) How many hexagons of carbon atoms are present in one molecule of buckminsterfullerene? (b) How many pentagons of carbon atoms are present in one molecule of buckminsterfullerene?
Kickstart Your Career
Get certified by completing the course
Get Started
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies