Which of there's compounds is most likely to be ionic?
A) SO2
B) NCl3
C) CO
D) SF4
E)BaCl2
E
The lattice energy for ionic crystals increases as the charge on the ions ___ and ____
A) increases; decreases
B) decreases; decreases
C) decreases; increases
D) increases; decreases
E) None of these are generally correct
D
Select the compound with the highest lattice energy?
A) NaI
B) CaS
C) LiBr
D) MgO
E) BaO
D
The formula for magnesium sulfate is ____?
A) MgS
B) MnSO4
C) MnS
D) MgSO4
E) MnSO4
D
The chemical formula for iron(II) nitrate ___?
A)Fe2n3
B) Fe(NO3)2
C) Fe(NO2)2
D) Fe2(NO3)3
E) Ir(NO2)2
B
What is the formula for iron(II) nitrate?
A)Pb2O
B) Pb2O3
C) PbO
D) PbO4
E) PbO2
C
Which of these compounds is most likely to be covalent?
A) CaO
B) MgI2
C) SrCl2
D) Rb2S
E) CS2
E
The compound P4S10 is called what?
Tetraphosphorous Decasulfide
Diiodine pentoxide's formula is?
I2O5
Tetrasulfur dinitride's formula is?
S4N2
A hydrocarbon compound contains one carbon atom for every two hydrogen atoms. What is it's empirical formula?
A) C6H14
B) CH2
C) CH2.3
D) C.43H
E) C2H
B
How many moles of OH- are in 17.8 g of magnesium hydroxide, Mg(OH)2?
A) 2.32 mol
B) .610 mol
C) 3.28 mol
D) .431 mol
E) .200 mol
B
What is the percent sulfur in iron(III) sulfate?
A) 48%
B) 24%
C) 42%
D) 28%
E) 32%
B
What is the mass of carbon atoms in 3.90X10^18 molecules of C2H4?
A) 7.80 X10^18 g
B) 6.43 X10^3 g
C) 12.01 g
D) 1.30 X10^-5 g
E) 1.56 X10^-4 g
E
What is the correct order for increasing bond strength? 1. Triple bond 2. Double 3. Single
A) 2<3<1
B) 3<2<1
C) 3<1<2
D) 1<2<3
B
A polar covalent bond would form in which one of these pairs of atoms?
A) Cr-Br
B) P-Cl
C) Cl-Cl
D) Ca-Cl
E) Si-Si
B
Which of these covalent bonds is the most polar?
A)Si-Cl
B) Si-I
C) Al-Cl
D) Al-I
E) Si-P
C