The reaction: Ba + Cuo rightarrow Bao + Cu, will occur if a) Cu is more active t

Question

The reaction: Ba + Cuo rightarrow Bao + Cu, will occur if a) Cu is more active than Ba b) Ba is more active than Cu c) Ba is more active than O d) O is more active than Cu The following reaction: 2Al + 3O_2 rightarrow Al_2O_3, is an example of a) combination. b) decomposition. c) single-displacement. d) double-displacement. The following reaction: NaCl + AgNO_3 rightarrow AgCl + NaNO_3, is an example of a) combination. b) decomposition. c) single-displacement. d) double-displacement. The reaction of glucose, C_6H_12O_6, with oxygen produces carbon dioxide and water. What is the sum of the coefficients in the balanced equation? a) 19 b)17 c) 12 d) 6 When the equation Al + O_2 rightarrow Al_2O_3 is balanced, a term in the balanced equation is a) 2Al b) 2Al_2O_3 c) 3Al d) 2O_2 The reaction of ZnBr_2 and Ba(OH)_2 produces a) ZnO and BaBrH. B) ZnBa and BrOH. c) ZnBr_2 and Ba(OH)_2. d) BaBr_2 and Zn(OH)_2.

Explanation / Answer

Q1.

This will occur only if Ba is more reactive than ba, therefore

choose B

Q2.

this is an example of COMBINATION, since Al and Oxygen are being combined to form 1 compound

Q3

this is clearly a double replacement

since AB + CD = AD + BC

Q4

balance:

C6H12O6 + O2 = CO2 + H2O

balance C

C6H12O6 + O2 = 6CO2 + H2O

balance H

C6H12O6 + O2 = 6CO2 + 6H2O

balance O

C6H12O6 + 6O2 = 6CO2 + 6H2O

tota = 1+6+6+6 = 18+1 = 19

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