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77julia77 [94]
3 years ago
5

Bisphenol-A (BPA) is a compound found in many plastics. Under certain circumstances, BPA leaches out of the plastic and is inges

ted. Inside the body, BPA imitates a hormone that stimulates growth of the female secondary sex characteristics. Based on this information, what would BPA be classified as?
Chemistry
2 answers:
Otrada [13]3 years ago
8 0

BPA is xenoestrogen as it mimics estrogen.

Xenoestrogens are xenohormones (the substances which mimics hormones, can be natural or synthetic) which mimics estrogen

They may disturb the reproductive system of human beings.


saveliy_v [14]3 years ago
3 0
BPA is estrogenic and an endocrine disruptor.
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Which of the following is least likely to increase the rate of diffusion?A small concentration gradientB higher concentration of
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Answer: Option (A) is the correct answer.

Explanation:

Rate of diffusion is defined as the total movement of molecules from a region of higher concentration to lower concentration.

The interaction between medium and the material is responsible for the rate of diffusion of a material or substance.

A small concentration gradient means small difference in the number of molecules taking part in a reaction. So, when there no large difference between the concentration then there won't be much difference in the rate of diffusion of a material.

Whereas a higher concentration of molecules will lead to more number of collisions due to which frequency of molecules increases. Therefore, rate of diffusion will also increase.

Small molecule size will also lead to increases in rate of diffusion. This is because according to Graham's law rate of diffusion is inversely proportional to molar mass of an element. Hence, smaller size molecule will have smaller mass. As a result, rate of diffusion will be more.

High temperature means more kinetic energy of molecules due to which more number of collisions will be there. Hence, rate of diffusion will also increase.

Thus, we can conclude that out of the given options a small concentration gradient  is least likely to increase the rate of diffusion.

4 0
2 years ago
What occurs when zero visibility is caused by heavy snowfall combined strong updrafts and downdrafts
muminat
A whiteout occurs when strong updrafts and downdrafts combine 
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3 years ago
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If the bright lines in the spectrum of oxygen are matched by lines in the dark-line spectrum of the sun, what does that indicate
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Hello young fellow friend I think the anwser is (C)
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It takes 281.7 kJ of energy to remove 1 mole of electrons from the atoms on the surface of lithium metal. If lithium metal is ir
Alex17521 [72]

Answer:

The maximum kinetic energy of electron is = 2.93 × 10^{-19} Joule

Explanation:

We know that total energy

E = \frac{hc}{\lambda}  ------------ (1)

Here h = plank's constant = 6.62 × 10^{-34} J s

c = speed of light = 3 × 10^{8} \frac{m}{s}

\lambda = 261 nm = 261  × 10^{-9} m

Put all these values in equation (1) we get

E = 7.6   × 10^{-19} J

We know that

Total energy = Energy to remove an electron + K.E of electron

Energy to remove an electron = \frac{281.7 (1000)}{(6.023)10^{23} }

Energy to remove an electron = 4.67  × 10^{-19} J

K.E of electron = Total energy - Energy to remove an electron

K.E of electron = 7.6   × 10^{-19} -  4.67  × 10^{-19}

K.E of electron = 2.93 × 10^{-19} Joule

Therefore the maximum kinetic energy of electron is = 2.93 × 10^{-19} Joule

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3 years ago
Which carbon compound is soft, slippery, a decent electricity conductor, and bonded in a way that forms planes?
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Your answer is Graphite
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