Answer:
d. 127 g/mol.
Explanation:
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In this case, since we have the amount of molecules of this this compound, we are able to compute the moles out there by using the Avogadro's number:

Which correspond to the moles of X2. Then, by using the mass we are able to compute the molar mass of X2:

It means that the atomic mass of X halves the molar mass of X2, which is then d. 127 g/mol.
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Nonpolar covalent bonds are chemical bonds where two atoms share a pair of electrons with each other and the electronegativities of the two atoms are equal. An example is methane. It has four carbon-hydrogen single covalent bonds. These bonds are nonpolar because the electrons are shared equally.
What special structures are needed for green plants?
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A.chloroplasts and chlorophyll
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<span>
What happens during the light reaction of photosynthesis? </span>
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D. Water molecules split apart. (Not 100%)
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<span>Velocity describes the speed of an object and its direction of motion</span>
Answer:
1 I'm doing this in science class right now I got help yesturday on it! hope this helps