Atomic Theory And The Periodic Table Worksheet With Answers Page 10
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1765. Consider the following unbalanced chemical equation.
___ NH
ClO
→ ___ Cl
+ ___ N
+ ___ O
+ H
O
4
4
2
2
2
2
What is the coefficient in front of O2 when this equation is correctly balanced?
a) 1
b) 2
c) 3
d) 4
66. List the total number of each type of atom found in the following reactants:
2FeCl
+ 3Na
CO
3
2
3
a) I
b) II
c) III
d) IV
Chemical Reactions – types of reactions
67. Some calcium metal is placed in water, and a reaction occurs that produces a gas. The gas is collected
in a test tube. A burning splint is placed near the opening of the test tube, and a “pop” sound is heard.
Droplets of water form on the inside of the test tube. What is the identity of the gas that was produced in
the reaction of calcium metal with water?
a) oxygen
b) chlorine
c) carbon dioxide
d) hydrogen
68.
22) A
23) B
24) E
25) C
26)E or D
27)A
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