6. Atomic mass is in the units of a) amu/atom, b) amu/mol, c) g/mol, d) g/atom.

Question

6. Atomic mass is in the units of a) amu/atom, b) amu/mol, c) g/mol, d) g/atom. 7. Calculate the following to the proper number of significant figures. a) 14.3505 + 2.65 = b) (0.2501 ) (3.3910)= c) 8.6 x (1255-3.45 x 1081 = 8. Indicate whether each of the following represents element, compound, mixture, atom, molecule, cation, or anion, or two of the above. NH NH NaN How many protons, neutron, and electrons are in "Fe? 9. 10. Name KCIO 11. Give formulas for Copper(I) oxide lodic acid Sulfur hexafluoride

Explanation / Answer

ans 6 (c) g/mol

ans 7 (a)17.00

(b) 84.5*102

  (c) 7.6*103

ans 8. a) atom

b) molecule

c) compound

d) cation

e) compound

ans 9. proton=26

electron = 23

neutron =56- number of proton = 30

ans 10. a) phosphorus

b) Dinitrogen pentoxide

c) Potassium perchlorate

ans 11 Copper(I) oxide Cu2O

   I2O5

  Sulfur hexafluoride SF6

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