The empirical formula and molecular mass of a compound are CH2O and 180 g, respectively. The molecular formula of the compound is -

1.  C9H18O9 2.  CH2O
3.  C6H12O6 4.  C2H4O2
Subtopic:  Empirical & Molecular Formula |
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The molar mass of naturally occurring Argon isotopes is: 

Isotope Isotopic molar mass Abundance
36-Ar  35.96755 g mol–1 0.337%
38-Ar  37.96272 g mol–1  0.063%
40-Ar  39.9624 g mol–1  99.600%
 
1. 49.99947 g mol-1  2. 39.99947 g mol-1  
3. 35.59947 g mol-1   4. 45.59947 g mol-1  
Subtopic:  Empirical & Molecular Formula |
 81%
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On complete combustion, 44 g of a sample of a compound gives 88 g CO2 and 36 g of H2O. The molecular formula of the compound may be:

1.  C4H6 

2.  C2H6O 

3.  C2H4O

4.  C3H6O

Subtopic:  Empirical & Molecular Formula |
 72%
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An organic compound contains carbon, hydrogen, and oxygen. Its elemental analysis gave C, 38.71%, and H, 9.67%. The empirical formula of the compound would be:

1. CH3O 2. CH2O
3. CHO 4. CH4O
Subtopic:  Empirical & Molecular Formula |
 78%
AIPMT - 2008
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