2 years ago

Which statement best describes the structure of a lipid molecule?

Chemistry

1 answer:

Sergeeva-Olga [200]2 years ago

5 0

A phospholipid has a charged head and an uncharged tail.

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On a recent car ride, a student traveled the first 20 kilometers in 5 minutes, the next 60 kilometers in 50 minutes, and the las

inn [45]

Answer:

it is 90 km in one hour it is 90km/h

90/60=1,5

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3 years ago

he heat of fusion of tetrahydrofuran is . Calculate the change in entropy when of tetrahydrofuran melts at . Be sure your answer

lana [24]

Answer:

$\Delta S=1.8x10^{-3}\frac{kJ}{K}=1.8\frac{J}{K}$

Explanation:

Hello.

In this case, given the heat of fusion of THF to be 8.5 kJ/mol and freezing at -108.5 °C, for the required mass of 5.9 g, we can compute the entropy as:

$\Delta S=\frac{n*\Delta H}{T}$

Whereas n accounts for the moles which are computed below:

$n=5.9g*\frac{1mol}{72g} =0.082mol$

Thus, the entropy turns out:

$\Delta S=\frac{0.0819mol*8.5 kJ/mol}{(-108.5+273.15)K}\\\\\Delta S=1.8x10^{-3}\frac{kJ}{K}=1.8\frac{J}{K}$

Best regards.

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3 years ago

How could you determine the acceleration of marble?

arsen [322]

Since f=ma assuming you knew the mass of the marble and the total amount of force acting on it than you would divide the amount of force by the mass.

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Research about the reaction of baking soda and vinegar

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3 years ago

Convert 11 degrees Fahrenheit into degrees Celsius and then into kelvin. Show your work.

olchik [2.2K]

Celsius: -11.7

Kelvin: 261.5

Hope it helps! Please mark Brainliest! :)

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3 years ago