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SpyIntel [72]
2 years ago
8

What is sexual selection? *

Chemistry
1 answer:
yawa3891 [41]2 years ago
6 0

Answer:

B: The behaviors an animal must display in order to find a mate

Explanation:

An animal usually looks for specific characteristic in order for their offspring to develop those same characteristics and be able to survive

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A compound is found to contain 7.962 % silicon , 20.10 % chlorine , and 71.94 % iodine by mass. to answer the question, enter th
arlik [135]
Empirical   formula  is  calculated   as  follows

calculate  the  moles  of  each  element,  that  is   %  composition/  molar  mass
molar  masses  (  Si=  28.09g/mol ,  Cl=  35.5  g/mol,  I=126.9 g/mol)

moles  of  silicon =  7.962/28.09g/mol=  0.283  moles
moles  of  chlorine =  20.10 / 35.5g/mol =  0.566  moles
moles  of  iodine=  71.94 / 126.9  g/mol=  0.567  moles

divide  each  mole   with  smallest    mole  (0.283)
that  is    silicon =  0.283/0.283= 1 mole
             chlorine =  0.566/0.283=  2 mole
            Iodine=  o.567/0.283= 2  moles
empirical  formula  is  therefore=  SiCl2I2


5 0
2 years ago
What is a cell? ‍♀️
Alexandra [31]

Answer:

Cell is defined as the smallest unit or basic unit of life.

3 0
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determine whether the nucleus or the electron cloud contributes the most to the volume of an atom. Explain.
Dima020 [189]

Answer:

The electron cloud

Explanation:

<em>Rutherford’s gold foil experiment</em> showed that the atom consisted of a tiny nucleus inside of a much larger electron cloud.

The diameter of the electron cloud is about 50 000 times that of the nucleus.

5 0
3 years ago
I NEED HELP PLEASE, THANKS! :)<br><br>Explain why ionic compounds are always polar.
evablogger [386]

Answer and Explanation:

Polar compounds are those that have an unequal sharing of electrons, causing one end to be more positively or negatively charged than the other end.

Ionic compounds are those that are made up of a positive ion and a negative ion. Clearly, we can see that if one ion is positive and the other is negative, then that would make one end of the compound more or less positively charged than the other end, which is exactly the definition of a polar compound.

That is why ionic compounds are always polar.

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What evidence exists for a more recent increase in greenhouse gas concentrations in the atmosphere
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Answer:

-data collected from Mauna Loa shows an increase in CO2 by 20% in the last 40 years

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-data from ice cores and other proxies show increases in CO2, CH4, and N2O since the Industrial Revolution

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