The number of formula units in 29.25g of common salt_________________?

Related Mcqs:

1. 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

2. 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

3. Empirical formula of chloroform is____________________?

   A. CH2 C12
   B. CH3C1
   C. CC14
   D. CHCL3

4. Which of the following is the formula of chrome red ?

   A. Pb3 O4
   B. 2Pb CO3 – Pb (OH)2
   C. Pb Cr O4 – Pb (OH)2
   D. Pb2O

5. Which of the following compounds has the empirical formula CH2O and reacts with sodium hydroxide ?

   A. carbonic acid
   B. ethanol
   C. acetic acid
   D. methanoic acid

6. Aldehyde and ketone have same general formula for homologous series_________________?

   A. CnH2nO2n
   B. CnH2n
   C. CnH2nO
   D. CnH2nOn+1

7. What is the molecular formula of Benzenetriozonide ?

   A. C6H6O9
   B. C6H5O8
   C. C6H5O9
   D. C6H6O6

8. General formula of alkyne is______________?

   A. CnH2n + 2
   B. CnH2n – 2
   C. CnH2n
   D. CnH2n + 2

9. The formula C6H5-CO-CH3 represents_______ ?

   A. Acetone
   B. Acetic acid
   C. Acetophenone
   D. Phenyl acetate

   Submitted by: Muhammad Ali Kunbhar

10. If a compound contains 24 gram of carbon 2 gram of hydrogen and 64 gram of oxygen then its empirical formula will be________?

    A. C2H2O4
    B. CH2
    C. CH2O
    D. CHO2

    Submitted by: Raza Samejo