AnswersFL-2003350-Chemistry 1 HonorsEvidence of Chemical Reactions

Writing and Balancing Chemical Equations Answers

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1
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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.
Option A
B
Delta over a right arrow.
Option B
C
2 a t m over a right arrow.
Option C
D
Upper P t over a right arrow.
Option D
2
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Which statement best describes the formula equation Cl2(g) + 2KBr(aq) 2KCl(aq)+ Br2(l)?

Question illustration
A
Carbon iodide reacts with potassium bromide to form potassium carbon iodide and bromine.
B
Bromine gas reacts with a solution of potassium chloride to form potassium bromide and chlorine gas.
C
Potassium bromine gas reacts with liquid chlorine to form potassium chloride in solution and bromine gas.
D
Chlorine gas reacts with potassium bromide to form potassium chloride in solution and liquid bromine.
3

The chemical equation for the formation of ammonia is unbalanced.3H2(g) + N2(g) NH3(g)If three molecules of hydrogen react with one molecule of nitrogen, how many molecules of ammonia would be formed?

Question illustration
A
1
B
2
C
3
D
4
4

Which formula equation shows a reversible reaction?

A
mc010-1.jpg
Option A
B
mc010-2.jpg
Option B
C
mc010-3.jpg
Option C
D
mc010-4.jpg
Option D
5

Which word equation shows hydrogen reacting with oxygen to form water?

A
oxygen + water hydrogen
Option A
B
hydrogen + oxygen water
Option B
C
oxygen + water hydrogen + water
Option C
D
hydrogen + water oxygen
Option D
6

According to the law of conservation of

A
charge
B
energy
C
mass
D
momentum
7

Isopropanol burns in oxygen to yield carbon dioxide, water, and heat. Which word equation best represents this chemical reaction?

A
isopropanol carbon dioxide + water + heat
Option A
B
isopropanol carbon dioxide + water + oxygen
Option B
C
isopropanol + oxygen carbon dioxide + water + heat
Option C
D
isopropanol + oxygen + heat carbon dioxide + water
Option D
8

In a chemical equation, which symbol should be used to indicate that a substance is in solution?

A
(s)
B
(g)
C
(l)
D
(aq)
9

Consider the unbalanced equation for the oxidation of butene.C4H8 + 6O2 CO2 + H2OFor each molecule of C4H8 that reacts, how many molecules of carbon dioxide and water are produced?

Question illustration
A
two carbon dioxide molecules and two water molecules
B
four carbon dioxide molecules and four water molecules
C
two carbon dioxide molecules and four water molecules
D
four carbon dioxide molecules and two water molecules
10

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).
Option A
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).
Option B
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).
Option C
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).
Option D

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