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Elis [28]
2 years ago
10

Which best describes thermal energy?

Chemistry
1 answer:
Dimas [21]2 years ago
7 0

Answer:

Tha answer I s D. Hope it will work to u

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A solution of ethanol (c2h5oh) in water is prepared by dissolving 75.0 ml of ethanol (density 0.79 g/cm3 ) in enough water to ma
navik [9.2K]

Given the density of ethanol = 0.79\frac{g}{cm^{3} }

Volume of ethanol = 75.0 mL

Calculating the mass if ethanol from density and volume:

75.0 mL * \frac{0.79g}{1cm^{3} } *\frac{1cm^{3} }{1mL}=59.25g

Molar mass of ethanol = (2*atomic weight of C)+(6*atomic weight of H)+(1*atomic weight of O)

                                     =(2*12g.mol) + (6*1g/mol) + (1*16g/mol)

                                     =46g/mol

Moles of ethanol = 59.25 g *\frac{1 mol}{46g} =1.288 mol

Volume of the solution = 250.0 mL

Converting the volume from mL ot L:

250.0mL*\frac{1L}{1000mL}=0.2500L

Molarity of ethanol in the solution = \frac{1.288mol}{0.250L} =5.15 M

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3 years ago
Vines most successfully compete for sunlight in tropical rainforests by _______.
julsineya [31]

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climbing up into the canopy

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2 years ago
How is clay deposited to form shale?
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Answer:Shale is a fine-grained sedimentary rock that forms from the compaction of silt and clay-size mineral particles that we commonly call "mud." This composition places shale in a category of sedimentary rocks known as "mudstones." ... "Fissile" means that the rock readily splits into thin pieces along the laminations.

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3 is the youngest later
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using the law of conservation of energy explain three types of energy transformations that occur during a roller coaster ride fr
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