A substance is analyzed and found to have an emperical formula of CH2 and a molar mass of 56g/mole. What is the molecular formula of the compound?

A. C2H4
B. C3H6
C. C4H8
D. C5H10

Submitted by: Muhammad Ali Kunbhar

Related Mcqs:

A compound is determined to have an emperical formula of C2H6O and a molar mass of 138 g/mole. What is the molecular formula?
A. C2H6O
B. C6H18O3
C. C6H12O6
D. C2H5O
Submitted by: Muhammad Ali Kunbhar
O3 reacts with CH2CH2 to form ozonide. On hydrolysis it forms
A. Ethylene oxide
B. HCHO
C. Ethylene glycol
D. Ethyl alcohol
Submitted by: Aamir khan Hullio
The molecular formula for cholesterol is C27 H46 O. What are the degrees of unsaturation for this compound?
A. 5
B. 6
C. 7
D. 8
Submitted by: Muhammad Ali Kunbhar
Ammonium cynanate was 1st Inorganic compound that was converted into an Organic compound (in Lab) through boiling water. The organic compound was____.
A. Methane
B. Ethanol
C. Acetic acid
D. Urea
Submitted by: Aamir khan Hullio
A sample of an iron and oxygen ore has a mass of 35.8 grams. The iron in the compound has a mass of 27.9 grams. What is the percent iron in the ore?
A. 74% Fe
B. 75% Fe
C. 77% Fe
D. 78% Fe
Submitted by: Muhammad Ali Kunbhar
Oxygen (molecular weight = 32) diffuses at a rate of 10cm3/min under the same conditions of temperature and pressure how fast will hydrogen (molecular weight = 2) diffuse ?
A. 20cm3/min
B. 40cm3/min
C. 160cm3/min
D. 2.5cm3/min
The quantity of heat required to convert one mole of liquid into its vapours at its boiling point is called molar heat of__________________?
A. vaporization
B. evaporation
C. crystallization
D. sublimation
0.5 mole of nitrogen gas and 0.5 mole of carbon monoxide gas at STP have same_____________?
A. Value of a
B. Mass
C. Atoms
D. Both B and C
What is the molecular formula for Nitric acid ________ ?
A. HNO2
B. HNO3
C. HN2O2
D. H2NO4
Submitted by: Rashid Mehmood
How many isomeric aldoses are possible for the molecular formula C6H12O6?
A. 2
B. 4
C. 7
D.16
Submitted by: Muhammad Ali Kunbhar