A. Pb3 O4
B. 2Pb CO3 – Pb (OH)2
C. Pb Cr O4 – Pb (OH)2
D. Pb2O
A. IIIA group
B. IVA group
C. VA group
D. VIA group
A. Si
B. As
C. Te
D. None of the above
A. Ag
B. A
C. Au
D. Cu
A. endothermic
B. exothermic
C. unpredictable
D. same
A. A
B. Ag
C. Both
D. Neither
A. constitutive property
B. additive property
C. colligative property
D. intrinsic property
A. 1.008 x 10-3
B. 5.5 x 10-4
C. 1.84 x 10-4
D. 1.673 x 10-3
A. 1 x 10-1
B. 1 x 10-14
C. 1 x 10-7
D. 1
A. whole amount of reactant does not change into product
B. chemical equilibrium is established
C. a catalyst changes the direction of reaction
D. rate of forward reaction decreases as reaction proceeds