Chemistry
Grade-9
Easy
Question
What is the simplest ration of sodium, carbon and oxygen if it has the percentage of 43.4, 11.3 and 45.3 respectively?
- 2:1:1
- 2:1:3
- 3:1:2
- 1:2:3
Hint:
Consider total of 100g compound present.
The correct answer is: 2:1:3
In the compound sodium, carbon and oxygen has the percentage of 43.4, 11.3 and 45.3 respectively. Considering total of 100g compound present.
Element
Symbol
% of element
Atomic mass
number of moles
Simple number ratio
whole number ratio
Sodium
Na
43.4
23
1.89
2.01
2
Carbon
C
11.3
12
0.94
1
1
Oxygen
O
45.3
16
2.83
3.01
3
The simplest ratio is 2:1:3
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