An oxide of silicon was found to contain 47% by mass silicon. What is the empirical formula of the oxide? (Si=28,O=16)

      

An oxide of silicon was found to contain 47% by mass silicon. What is the empirical formula of the oxide? (Si=28,O=16)

  

Answers


Solomon
ELEMENT SILICON OXYGEN
% Composition 47 100-47=53
Relative atomic mass 28 16
No.of moles. 47/28 53/16
=1.68 = 3.31
Mole ratio. 1.68/1.68 3.32 /1.68

= 1. 1.94
Simple whole number ratio. 1:2
Empirical formula is SiO2

solomonndegwa answered the question on August 13, 2018 at 18:18


Next: Determine the number of moles in 13.5 g of aluminium (Al =27)
Previous: Write short notes on the following sources of variations: (a) Mutations. (b) Gene Recombination. (c) Migration. (d) Ploidy levels

View More Chemistry Questions and Answers | Return to Questions Index


Exams With Marking Schemes

Related Questions