1. 1. What is the molar % composition of Cl in carbon tetrachloride? Choose one
ID: 824488 • Letter: 1
Question
1. 1. What is the molar % composition of Cl in carbon tetrachloride?
Choose one answer.
A. 92.2%
B. 23.0%
C. 71.7
D. 46.1%
E. 7.8%
2. I2. n the correct Lewis structure for methane (CH4) molecule, how many unshared electron pairs surround the carbon?
Choose one answer.
A. 4
B. 8
C. 2
D. 0
3. 3. Choose the correct order of elements from most to least electronegative.
Choose one answer.
A. Zr, Mo, Cd, As, Cl
B. Cl, As, Cd, Mo, Zr
C. Cl, As, Mo, Zr, Cd
D. Cl, As, Zr, Mo, Cd
4. 4. How many molecules are present in 0.85 moles of cobalt nitrate?
Choose one answer.
A. 5.12 x 10^23
B. 6.02 x 10^23
C. 180.93
D. 2.55 x 10^23
5. I5. n ionic bonds, valence electrons are
Choose one answer.
A. ignored.
B. unequally shared.
C. destroyed.
D. transferred.
E. equally shared.
6. 6. Place these elements in the order of smallest atomic radius to largest atomic radius.
Choose one answer.
A. Cl, As, Cd, Mo, Zr, Cs
B. K, Ca, Sc, Ti, V, Cr
C. K, Ca, Sc, Ti, V, Cr
D. Xe, Kr, Ar, Ne, He, H
7. 7. Molecular Bonds may be produced by any of the following processes involving electrons EXCEPT
Choose one answer.
A. gaining of electrons
B. losing the electrons
C. splitting of electrons
D. sharing the electrons
8. 8. Empirical formula C3H7 is found to have a molecular weight of 86 g/mole. What is the molecular formula? (Numbers on the following choices are subscripts)
Choose one answer.
A. CH
B. CH2
C. H2O
D. C6H14
A. 92.2%
B. 23.0%
C. 71.7
D. 46.1%
E. 7.8%
Explanation / Answer
1. 92%
2. 0
3.
C. Cl, As, Mo, Zr, Cd
4.
A. 5.12 x 10^23
5.
D. transferred.
6.
C. K, Ca, Sc, Ti, V, Cr
7.
C. splitting of electrons
8.
D. C6H14
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