What is the mass of one mole of Iodine?

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1. 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...

2. 1 mole of electron has mass in microgram_________________?

   A. 1.008 x 10-3 B. 5.5 x 10-4 C. 1.84 x 10-4 D. 1.673 x 10-3...

3. The mass of one mole of electron is________________?

   A. 1.008 B. 0.55 C. 0.184 D. 1.637...

4. 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...

5. 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...

6. Iodine is solid due to_________________?

   A. Strong covalent bond B. Large value of dipole moment C. High polarizability D. Strong hydrogen bonding...

7. Which of the following oxides of iodine is used for quantitative analysis of CO ?

   A. I2O4 B. I4O2 C. I2O5 D. All are equally useful...

8. I3( Tri-iodine) has shape_________?

   A. Trigonal bipyramidal B. Linear C. Square bipyramidal D. Both A and C Submitted by: Muhammad Ali Kunbhar...

9. Mass spectrometer is used to determine Mass number of isotopes and___________________?

   A. Atomic number B. Relative abundance C. Electronic configuration D. All of the above...

10. 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...