9. What is the difference between 2H and H,? (atleast 2 dif.)
10. (a) what would be gm atomic mass of 5 moles of chlorine?
(b) Calculate the gm atomic mass of one atom of oxygen,
(gm at. mass of oxygen = 16 gm.)
Answers
Answer:
9. H2 is molecular hydrogen.it is a molecule of hydrogen that consists of two hydrogen atoms bonded together by one single bond. 2H denotes two moles of elemental hydrogen.it should be noted that elemental hydrogen is not bonded to anything.
10. a. The gram atomic mass of Cl is the mass in grams of one mole of of Cl atoms, which equals 35.5 g/mol. As we increase the number of moles the number of grams increases proportionally so this ratio does not change. Atomic mass is therefore known as an intensive property.
Mass, on the other hand, is an extensive property, it increase as as moles increase. The mass of 5 moles of Cl is (5mol)(35.5g/mol) = 177.5g.
b. One atom of oxygen = 1× atomic mass
=1×16=16gm=0.016Kg
A molecule of O2 = 2× atomic mass
=2×16=32gm=0.032Kg