Writing and Balancing Chemical Equations Answers
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1
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Fluorine gas is placed in contact with calcium metal at high temperatures to produce calcium fluoride powder. What is the formula equation for this reaction?
A
Upper F subscript 2 (l) plus upper N a (s) right arrow upper N a upper F subscript 2 (s).
B
Upper F subscript 2 (g) plus upper C a (s) right arrow upper C a upper F subscript 2 (l).
C
Upper F subscript 2 (g) plus upper N a (s) right arrow with delta above upper N a upper F subscript 2 (l)
D
Upper F subscript 2 (g) plus upper C a (s) right arrow with delta above upper C a upper F subscript 2 (s).
2
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Which word equation shows hydrogen reacting with oxygen to form water?
A
oxygen + water hydrogen
B
hydrogen + oxygen water
C
oxygen + water hydrogen + water
D
hydrogen + water oxygen
3
Which symbol can be used to indicate the pressure at which a chemical reaction is carried out?
A
25 degrees Celsius over a right arrow.
B
Delta over a right arrow.
C
2 a t m over a right arrow.
D
Upper P t over a right arrow.
4
Which equation has both a liquid and a gas as products?
A
2 upper H g upper O (s) right arrow 2 upper H g (l) plus upper O subscript 2 (g).
B
2 upper M g (s) plus upper O subscript 2 (g) right arrow 2 upper M g upper O (s).
C
1 UJpper K upper C l upper O subscript 3 (s) right arrow 2 upper K upper C l (s) plus 3 upper O subscript 2 (g).
D
Upper M g (s) plus 2 upper H upper C l (a q) right arrow upper H subscript 2 (g) plus upper M g upper C l subscript 2 (a q).
5
What is the formula equation for the reaction between sulfuric acid and dissolved sodium hydroxide if all products and reactants are in the aqueous or liquid phase?
A
Upper H upper C l (a q) plus upper N a upper O upper H (a q) right arrow upper N a upper C l (s) plus upper H subscript 2 upper O (l).
B
Upper H subscript 2 upper S upper O subscript 4 (a q) plus upper C a (upper O upper H) subscript 2 (a q q) right arrow upper C a upper S upper O subscript 4 (a q) plus 2 upper H subscript 2 upper O (l).
C
Upper H subscript 2 upper S upper O subscript 4 (a q) plus 2 upper N a upper O upper H (a q) right arrow upper N a subscript 2 upper A upper O subscript 4 (a q) plus 2 upper H subscript 2 upper O (l).
D
2 upper H subscript 3 upper P upper O subscript 4 (a q) plus 3 upper C a (upper O upper H) subscript 2 (a q) right arrow upper C a subscript 3 (upper PO upper O) subscript 4 (s) plus 6 upper H subscript 2 upper O (l).
6
Which formula equation shows a reversible reaction?
A
Option
B
Option
C
Option
D
Option
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