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3 years ago

Where is the energy from the sun stored on Earth? A. in rocks B. in green plants C. in ocean water D. in animal bodies

Chemistry

1 answer:

Lana71 [14]3 years ago

8 0

<h2>Explanation:</h2>

In Earth, only one living organism is able to trap Solar energy or energy from sun with the help of a pigment known as Chlorophyll, and that organism is none other than Green plants.

Why Green plants? Because, Chlorophyll is a n coloured pigment which can trap the sunlight for photosynthesis which is the process of making glucose from raw materials in plants.

Rest options:

Rocks and water are non living organism and can't trap the solar energy. And, animal bodies don't have Chlorophyll pigment, they even obtain their food from plants directly or indirectly.

Hence, the Correct Option is:

$\large{ \boxed{ \bf{ \red{Option \: B}}}}$

And we are done !!

#CarryOnLearning...

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How many calories would you need for converting ice at -20oc to boiling water?

Nezavi [6.7K]

About the amount in a 20 oz gatorade bottle

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2 years ago

Which of the following is a substance: table salt, seawater, or sand? Explain how you know.

Diano4ka-milaya [45]

TABLE SALT IS A SUBSTANCE.
In chemistry, a substance refers to a matter which has specific composition and specific properties which do not change. A substance can be an element or a compound. A substance typically has a constant composition, which can not be separated by physical methods.
In the question given above, table salt is an example of a chemical substance because, it has a constant specific composition and its components can not be separated by physical methods.
Seawater and sand are not substances, because they have varied compositions and their components can be separated by physical methods.

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2 years ago

The molar heat capacity of a compound with the formula C2H6SO is 88.0 J/mol-K. The specific heat of this substance is __________

lisabon 2012 [21]

Answer : The specific heat of this substance is, 1.13 J/g.K

Explanation :

Molar heat capacity : It is defined as the amount of heat absorbed by one mole of a substance to raise its temperature by one degree Celsius.

As we are given that the chemical formula of compound is, $C_2H_6SO$

First we have to calculate the molar mass of given compound.

Molar mass of $C_2H_6SO$ = $2(12g/mol)+6(1g/mol)+32g/mol+16g/mol$

Molar mass of $C_2H_6SO$ = 78 g/mol

Now we have to calculate the specific heat of this substance.

Specific heat of this substance = $\frac{\text{Molar heat capacity of a compound}}{\text{Molar mass of }C_2H_6SO}$

Specific heat of this substance = $\frac{88.0J/mol.K}{78g/mol}$

Specific heat of this substance = 1.13 J/g.K

Thus, the specific heat of this substance is, 1.13 J/g.K

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3 years ago

0.329 M copper (II) nitrate was reacted with 0.528 M potassium carbonate as follows: Cu (NO subscript 3 )subscript 2 italic (a q

EastWind [94]

Answer:

73.33% is the percent yield

Explanation:

Percent yield is defined as:

Actual yield (4.883g) / Theoretical yield * 100

Based on the reaction:

Cu(NO₃)₂(aq) + K₂CO₃(aq) → CuCO₃(s) + 2KNO₃(aq)

1 mole of copper nitrate reacts per mol of potassium carbonate.

To solve this question we must find limiting reactant. With limiting reactant we can find the theoretical moles of solid produced and its mass as follows:

Moles Cu(NO₃)₂:

0.1639L * (0.329mol / L) = 0.0539 moles

Moles K₂CO₃:

0.1639L * (0.528mol / L) = 0.0865 moles

As the reaction is 1:1, the limiting reactant is Cu(NO₃)₂.

1 mol of Cu(NO₃)₂ produces 1 mol of CuCO₃. That means theoretical moles produced are 0.0539 moles. And the mass is:

Mass CuCO₃ -Molar mass: 123.55g/mol-

0.0539 moles * (123.55g / mol) = 6.659g of CuCO₃ is the theoretical mass

And percent yield:

4.883g / 6.659g * 100

<h3>73.33% is the percent yield</h3>

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2 years ago

The acceleration due to gravity on the surface of Mars is about one third the acceleration due to gravity on Earth’s surface. Th

Ivenika [448]

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You can find that by using the formula for the weight:

weight = mass * acceleration due to gravity

So, given that the mass is constant and the acceleration due to gravity is one third, the weight is also one third.

3 0

3 years ago