Answers 26-27 WHS-Chemistry-1stSixWeeksThe History and Arrangement of the Periodic Table

Writing and Balancing Chemical Equations Answers

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Which statement best describes the formula equation Cl2(g) + 2KBr(aq) 2KCl(aq)+ Br2(l)?

Carbon iodide reacts with potassium bromide to form potassium carbon iodide and bromine.

Bromine gas reacts with a solution of potassium chloride to form potassium bromide and chlorine gas.

Potassium bromine gas reacts with liquid chlorine to form potassium chloride in solution and bromine gas.

Chlorine gas reacts with potassium bromide to form potassium chloride in solution and liquid bromine.

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The compound FeCl3 is made of

three molecules of iron chloride.

one atom of iron and three atoms of carbon.

one atom of iron and three atoms of chlorine.

two atoms of iodine, one atom of iron, and one atom of carbon.

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?

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).

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).

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).

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).

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

(s)

(g)

(l)

(aq)

This formula equation is unbalanced.P4(s) + 6Cl2(g) PCl3(l) Which coefficient should be placed in front of PCl3 to balance this equation?

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

isopropanol carbon dioxide + water + heat

isopropanol carbon dioxide + water + oxygen

isopropanol + oxygen carbon dioxide + water + heat

isopropanol + oxygen + heat carbon dioxide + water

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?

Which equation has both a liquid and a gas as products?

2 upper H g upper O (s) right arrow 2 upper H g (l) plus upper O subscript 2 (g).

2 upper M g (s) plus upper O subscript 2 (g) right arrow 2 upper M g upper O (s).

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).

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).

Which chemical equation is unbalanced?

C + O2 CO2

Sr + O2 2SrO

6H2 + 3O2 6H2O

H2 + H2 + O2 H2O + H2O

Which formula equation represents the burning of sulfur to produce sulfur dioxide?

Upper S (s) plus upper O subscript 2 (g) right arrow with delta above upper S upper O subscript 2 (g).

2 upper H subscript 2 upper s (s) plus 3 upper 0 subscript 2 (g) right arrow 2 upper H subscript 2 upper O (l) plus 2 upper S upper 0 subscript 2 (g).

4 upper F e upper S subscript 2 plus 11 upper O subscript 2 right arrow 2 upper F e subscript 2 upper O subscript 3 plus 8 upper S upper O subscript 2.

2 upper S upper O subscript 2 (g) plus upper O subscript 2 (g) right arrow with upper V subscript 2 upper O subscript 5 above arrow 2 upper S upper O subscript 3 (g).

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Writing and Balancing Chemical Equations Answers

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