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Liono4ka [1.6K]
3 years ago
5

Montrel takes a trip to Central America during the winter. He finds out that the temperature in Central America is about the sam

e year round. Which of the following could explain why?
Options:
A: Central America is near the North Pole.
B: Central America is near the South Pole.
C: Central America is near the equator.
D: Central America is near sea level.
Chemistry
1 answer:
wolverine [178]3 years ago
6 0

Answer:

C

Explanation

Because My teacher told me that for an example Florida is hot but in Central America is cold or hot and you don’t need a jacket. I don’t remember much

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"Rad dude , love that queen"

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Acetylene gas C2H2 undergoes combustion to form carbon dioxide and water when it is used in the oxyacetylene torch for welding.
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Answer:

The answer to your question is below

Explanation:

Reaction

                            C₂H₂ (g) + O₂(g)   ⇒   CO₂ (g)   +  H₂O (g)

                            Reactants         Elements         Reactants

                                    2                       C                       1

                                    2                       H                       2

                                    2                       O                       3

This reaction is unbalance

<u>Reaction balanced</u>

                        <u>   </u><u>2</u><u>C₂H₂ (g) +   </u><u>5</u><u>O₂(g)   ⇒   </u><u>4</u><u>CO₂ (g)   +  </u><u>2</u><u>H₂O (g)</u>

                            Reactants         Elements         Reactants

                                    4                       C                       4

                                    4                       H                       4

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Now, the reaction is balanced

a) Calculate the molecular mass of acetylene and water

Acetylene = (12 x 2) + (2) = 26 g

Water = (1 x 2) + (1 x 16) = 18 g

                           2(26) g of Acetylene ---------------  2(18) g of Water

                               113 g  of Acetylene --------------   x

                                x = (113 x (2 x 18)) / 2(26)

                                x = 4068 / 52

                             <u> </u>  x = 78. 2 g of water

b)                2 moles of Acetylene ------------  4 moles of carbon dioxide

                   x moles of acetylene ------------  1.10 moles of carbon dioxide

                         x = (1.10 x 2) / 4

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Explanation:

From the question given above, the following data were obtained:

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Isotope B:

Mass of B = 106.976 amu

Abundance (B%) = 1.568%

Isotope C:

Mass of C = 105.974 amu

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Average atomic mass = [(Mass of A × A%) /100] + [(Mass of B × B%) /100] + [(Mass of C × C%) /100] + [(Mass of D × D%) /100]

Average atomic mass = [(107.977 × 0.1620)/100] + [(106.976 × 1.568)/100] + [(105.974 × 47.14)/100] + [(103.973 × 51.13)/100]

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Answer:

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D

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Explanation:

8 0
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