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3 years ago

Explain the energy transformation that must occur for your body to participate in a physical activity, such as playing a sport.

Chemistry

1 answer:

yanalaym [24]3 years ago

3 0

Answer:

an example is an athlete has stored chemical energy in their body like fats and sugars then the stored chemical energy turns into kinetic energy as they run down the track.

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How many grams of co2 is produced when oxygen reacts with carbon?

Serggg [28]

44g of CO2 can produce by the reaction of carbon with oxygen

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3 years ago

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IrinaK [193]

Answer:

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Explanation:

4 0

3 years ago

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How many moles of hydrogen gas will be produced if 5.00 moles of zinc reactions with an excess amount of sulfuric acid

harkovskaia [24]

Answer:

Moles of Hydrogen produced is 5 moles

Explanation:

The balanced Chemical equation for reaction between zinc and sulfuric acid is :

$Zn(s) + H_{2}SO_{4}(aq) \rightarrow ZnSO_{4}(aq) + H_{2}(g)$

This equation tells that ; when 1 mole of Zn react with 1 mole of sulfuric acid, it produces 1 mole of zinc sulfate and 1 mole of hydrogen.

Since sulfuric acid is in excess so Zinc is the limiting reagent

(Limiting reagent : Substance which get consumed when the reaction completes, limiting reagent helps in predicting the amount of products formed)

Limiting reagent (Zn) will decide the amount of Hydrogen produced

$Zn(s) + H_{2}SO_{4}(aq) \rightarrow ZnSO_{4}(aq) + H_{2}(g)$

$1\ mole\ zinc\rightarrow 1\ mole\ H_{2}$

So,

$5\ mole\ zinc\rightarrow 5\ mole\ H_{2}$

Hence moles of Hydrogen produced is 5 moles

3 0

3 years ago

Which change of phase is most likely occurring in the beaker

solniwko [45]

Answer:

Evaporation

Explanation:

Heat makes molecules move and eventually evaporate.

5 0

3 years ago

Compute the number of grams(g) of lead in 22.5 moles of lead.

iogann1982 [59]

Answer:

4662 in grams

Explanation:

hope this helps :).

7 0

2 years ago