What is the number of zinc atoms in a piece of zinc weighing 10 g? (Atomic mass of Zn = 65 u)
Mass of zinc = 10g
gram atomic mass of zinc = 65g
We know that one mole of zinc contains 6.022 × 1023 atoms of zinc.
65g of zinc contain = 6.022 × 1023 atoms
Therefore, 10g of zinc contain = (10 × 6.022 × 1023)/65
= 9.264 × 1022 atoms
Therefore, 10 grams of zinc contain 9.264 × 1022 atoms.
- Related Articles
- Calculate the number of molecules present in a drop of chloroform (CHCl3) weighing 0.0239 g.(Atomic mass : C = 12 u ; H = 1 u ; Cl = 35.5 u)
- What is meant by atomic mass, gram atomic mass of an element? Why is the mass have different expressions i.e., ‘u’ and ‘g’?
- Calculate the formula unit masses of ZnO, Na2O, K2C03, given atomic masses of Zn = 65 u, Na = 23 u, K = 39 u, C = 12 u, and O = 16 u.
- What mass of nitrogen, N2, will contain the same number of molecules as 1.8 g of water, H2O? (Atomic masses : N = 14 u ; H = 1 u ; O = 16 u)
- What is the mass of(a) 1 mole of nitrogen atoms?(b) 4 moles of aluminium atoms (Atomic mass of aluminium = 27)?(c) 10 moles of sodium sulphite (Na2S03)?
- 10 Best Food Sources of Zinc
- How many moles are there in 34.5 g of sodium? (Atomic mass of Na = 23 u)
- (a) What is meant by 'a mole of carbon atoms'?(b) Which has more atoms, 50 g of aluminium or 50 g of iron? Illustrate your answer with the help of calculations.(Atomic masses : Al = 27 u ; Fe = 25 u)
- Which contains more molecules, 10 g of sulphur dioxide (SO2) or 10 g of oxygen (O2)?(Atomic masses : S = 32 u ; O = 16 u)
- If one gram of sulphur contains x atoms, calculate the number of atoms in one gram of oxygen element.(Atomic masses : S = 32 u ; O = 16 u)
- What is the mass of 5 moles of sodium carbonate (Na2CO3)?(Atomic masses : Na = 23 u ; C = 12 u ; O = 16 u)
- Which has more atoms, 100 grams of sodium or 100 grams of iron (given atomic mass of Na = 23 u, Fe = 56 u)?
- Atoms of elements having the same mass number but different atomic number are called ?
- Give the reaction involved during the extraction of zinc from its ore by (a) roasting of zinc ore(b) calcination of zinc ore
- Calculate the number of aluminium ions present in 0.051 g of aluminium oxide. (Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u)
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