The mass of one mole of electron is________________?

Related Mcqs:

1. 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...

2. When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________?

   A. 0.33 nm B. 0.34 nm C. 0.35 nm D. 0.36 nm...

3. 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...

4. The value of e/m ratio of electron is________________?

   A. 6.02 x 1023 C/kg B. 1.7588 x 1020 C/kg C. 9.1095 x 10-31 C/kg D. 1.7588 x 1011 C/kg...

5. Quantum number which tells the energy of electron is________________?

   A. n B. 1 C. m D. s...

6. 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...

7. 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...

8. What is the mass of one mole of Iodine?

   A. 74g B. 254g C. 127g D. 53g Submitted by: Shumail Bashir...

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...