2 years ago

How many chromosomes are in a human gamete ?

Chemistry

1 answer:

RideAnS [48]2 years ago

5 0

Answer:

Explanation:

if if you look at the screenshot it has the explanation

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Which of the following best describes an advantage of genetic engineering?

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If an atom has 5 protons, how many electrons does it have?

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An atom has the same number of protons and electrons

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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:

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

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What element has 2 electrons in the 4s sub level?

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is the Calcium because the calcium in group two which group two has 2 electron and also calcium and Potassium 4s sub level group potassium has 1 electron. :)

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The temperature Increases

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