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viktelen [127]
3 years ago
7

Solar energy received by the Earth's surface causes the Earth's surface to heat up during the day. Which of the following heat t

ransfer mechanisms is the main cause of the surface gaining heat? A. radiation B. convection C. conduction D. advection
Chemistry
1 answer:
serg [7]3 years ago
8 0

A. radiation

Explanation:

The heat transfer mechanism that causes the surface of the earth to gain heat is  by radiation.

Electromagnetic radiation is able to cause the heating of the surface by radiation.

Radiation is one of the methods of heat transfer the does not involve any particle.

The surface of the earth absorb some of the radiation and it causes them to warm up.

learn more:

Sun's energy brainly.com/question/1140127

#learnwithBrainly

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Based on table n, uranium-238 and uranium-235 have different
Amanda [17]

According to table N, the isotopes uranium-238 and uranium-235 have different half lives.

<h3>What are radioactive nuclides?</h3>

Radioactive nuclides are those nuclides that are able to undergo radioactive decay. They have specific modes of decay that is peculiar to each isotope.

Hence, according to table N, the isotopes uranium-238 and uranium-235 have different half lives.

Learn more about uranium-238:brainly.com/question/9099776

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4 0
1 year ago
A sample of 7.34 g of solid calcium hydroxide is added to 34.5 mL of 0.380 M Aqueous hydrochloric acid.Write the balanced chemic
oksian1 [2.3K]

Answer: Ca(OH)_2(s)+2HCl(aq)\rightarrow CaCl_2(aq)+2H_2O(l)

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.  

A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.  

The balanced chemical equation is:

Ca(OH)_2(s)+2HCl(aq)\rightarrow CaCl_2(aq)+2H_2O(l)

6 0
3 years ago
An ideal reversible heat pump is taking heat from the outside air at -14.0°c and discharging it into the house at 20.0°c. what i
just olya [345]

the coefficient of performance of this heat pump is 8.61.

<h3>What is Heat pump ?</h3>

The air source heat pump converts heat from the ambient air into a low-temperature liquid refrigerant. The pump compresses the liquid to raise its temperature using power. To release the heat it had been holding, it then condenses back into a liquid. Your underfloor heating system or radiators get heat.

coefficient of performance -The usable heating or cooling delivered to work (energy) needed ratio, also known as the coefficient of performance, or COP, of a heat pump, refrigerator, or air conditioning system. Higher efficiency, less energy (power) usage, and thus reduced operational costs are all related to higher COPs.

temperature of cold reservoir = -14.0°C

Tc = [ 273+ (-14.0)]K = 259K

temperature of hot reservoir = 20°C

Th = [ 273+ (20)]K = 293K

therefor, formula for coefficient of performance

Cop = Th/Th-Tc

Cop = 293/34

Cop = 8.61

to learn more about heat pump go to - brainly.com/question/3150928

#SPJ4

4 0
1 year ago
Select all the correct location on the image.
svetoff [14.1K]

Answer:

the singler dots know as neutrons so the 4 singler dots

Explanation:

7 0
3 years ago
Limestone (CaCO₃) is the second most abundant mineral on Earth after SiO₂. For many uses, it is first decomposed thermally to qu
steposvetlana [31]

Limestone (CaCO₃) is the second most abundant mineral on Earth after SiO₂. For many uses, it is first decomposed thermally to quicklime (CaO). MgO is prepared similarly from MgCO₃.

AT 871°C CaCO 3 needs about 1 hour for complete decomposition.

<h3>At what temperature Caco3 decompose to Cao?</h3>

At any temperature higher than 835°C, the value of Δ G ∘ will be negative and the decomposition reaction will be spontaneous.

AT 871°C CaCO 3 needs about 1 hour for complete decomposition.

Calcium carbonate decomposes on heating to give calcium oxide and carbon dioxide.

To learn more about Caco3, refer

brainly.com/question/26187973

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5 0
1 year ago
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