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Afina-wow [57]
3 years ago
13

A website promoting the use of alternative energy vehicles and hybrid technologies claims that "A typical automobile in the USA

uses about 500 gal of gasoline every year, producing about 5 tons of carbon dioxide." To determine the truth of this statement, calculate how many tons of carbon dioxide are produced when 500.0 gallon of gasoline are combusted. Assume that the primary ingredient in gasoline is octane, C₈H₁₈(l), which has a density of 0.703?
Chemistry
1 answer:
svetlana [45]3 years ago
4 0

Answer:

The statement is correct since 500 gallon of gasolin produces 4.56 ton of carbon dioxide.

Explanation:

The combustion of gasoline follows the reation bellow:

C₈H₁₈ (l) + 17,5O₂ (g) → 8CO₂ (g) + 9H₂O (g)

This means that each mol of octane produces 8 mol of CO₂.

1 gallon ______ 4546.09 mL C₈H₁₈

500 gallon ____    x

x = 2,273,045.00 mL C₈H₁₈

1 mL gasoline ______________ 0.703 g

2,273,045.00 mL C₈H₁₈ ____  y

y = 1,597,950.635 g C₈H₁₈

1 mol C₈H₁₈ _____ 126.239 g

            y          _____  1,597,950.635 g

y = 12,966.274 mol C₈H₁₈

1 mol C₈H₁₈ ___________ 8 mol CO₂

12,966.274 mol C₈H₁₈ ____  w

w = 103,730.192 mol CO₂

1 mol CO₂ ______________ 44 g

103,730.192 mol CO₂______   z

z = 4564128.448 g CO₂

500 gallon of gasolin produces 4.56 ton of carbon dioxide.

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yaroslaw [1]

Answer:

Explanation:

mole of HCl remaining after reaction with CaCO₃

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CaCO₃     +    2HCl   =   CaCl₂  +  CO₂  +  H₂O .

1 mole        2 moles

2 moles of HCl reacts with 1 mole of  CaCO₃

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5 0
2 years ago
Calculate the mass of khc8h4o4 that reacts with 15 ml of the naoh solution
dlinn [17]
The balanced chemical reaction would be:

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The concentration of the NaOH is equal 0.1 M. We use this and the volume given above to determine the mass of KH</span>C8H4O4. We do as follows:

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Explanation:

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The number and type of atoms entering the chemical reaction are the same with the number and type of atoms leaving the chemical reaction.

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You may see in the reaction that we have as reactants zinc and hydrochloric acid which react to form the products, zinc chloride and hydrogen.

(c) The number of molecules in the reactants are equal to the number of molecules in the products. (wrong)

As reactants we have 2 hydrochloric acid (HCl) molecules and as products 1  hydrogen (H₂) molecule. Zn is a metal and ZnCl is a salt.

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The number and type of atoms entering the chemical reaction are the same with the number and type of atoms leaving the chemical reaction.

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