3.661x10^neg37 lb should be the answer
The name given to the group delimited in the image is ethyl.
<h3>What is ethyl?</h3>
It is a hydrocarbon from the alkyl functional group.
Ethyl is a substituent derived from ethane. The formula for ethane is , whereas, ethyl has one H less than ethane.
Thus, the formula for ethyl is .
Looking at the delimited portion of the image, 2 C atoms in C-C bond are bonded by 5 H atoms.
More on alky groups can be found here: brainly.com/question/15942698
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One Ba2+ and two Br- ions will be there.
Answer is 3
B, millimeters because paper is really thin therefore it'd require small measurements for units.