Which functional group is found in an ester? A central carbon is double bonded to O above, and single bonded to R below left and right.
A central carbon is double bonded to O above, and single bonded to R below left and to O R prime below right.
R single bond O H.
R single bond N H 2.

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answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.